diff --git a/Makefile b/Makefile
index 6ebb54a8..291bb8e3 100644
--- a/Makefile
+++ b/Makefile
@@ -8,7 +8,7 @@ TCMALLOC =
 PORTABLE = 0
 ARGS ?=
 # Forward BB_RPC_* overrides into Docker so template generation sees desired endpoints/binds/allow lists.
-BB_RPC_ENV := $(shell env | awk -F= '/^BB_RPC_(URL|URL_WS|BIND_HOST|ALLOW_IP)_/ {print "-e " $$1}')
+BB_RPC_ENV := $(shell env | awk -F= '/^BB_RPC_(URL_HTTP|URL_WS|BIND_HOST|ALLOW_IP)_/ {print "-e " $$1}')
 
 TARGETS=$(subst .json,, $(shell ls configs/coins))
 
diff --git a/build/tools/templates.go b/build/tools/templates.go
index fd36d3c1..ee4c2f1a 100644
--- a/build/tools/templates.go
+++ b/build/tools/templates.go
@@ -193,7 +193,7 @@ func readCoinAlias(path string) (string, error) {
 }
 
 func rpcEnvPrefixes() []string {
-	return []string{"BB_RPC_URL_WS_", "BB_RPC_URL_", "BB_RPC_BIND_HOST_", "BB_RPC_ALLOW_IP_"}
+	return []string{"BB_RPC_URL_WS_", "BB_RPC_URL_HTTP_", "BB_RPC_BIND_HOST_", "BB_RPC_ALLOW_IP_"}
 }
 
 func collectUnknownRPCEnvVars(validAliases map[string]struct{}, prefixes []string) []string {
@@ -299,7 +299,7 @@ func LoadConfig(configsDir, coin string) (*Config, error) {
 		config.Env.RPCAllowIP = allowIP
 	}
 
-	rpcURLKey := "BB_RPC_URL_" + config.Coin.Alias // Use alias so env naming matches coin config and deployment conventions.
+	rpcURLKey := "BB_RPC_URL_HTTP_" + config.Coin.Alias // Use alias so env naming matches coin config and deployment conventions.
 	if rpcURL, ok := os.LookupEnv(rpcURLKey); ok && rpcURL != "" {
 		// Prefer explicit env override so package generation/tests can target hosted RPC endpoints without editing JSON.
 		config.IPC.RPCURLTemplate = rpcURL
diff --git a/docs/build.md b/docs/build.md
index 192fed86..f74a9419 100644
--- a/docs/build.md
+++ b/docs/build.md
@@ -88,15 +88,15 @@ command: `make NO_CACHE=true all-bitcoin`.
 
 `PORTABLE`: By default, the RocksDB binaries shipped with Blockbook are optimized for the platform you're compiling on (-march=native or the equivalent). If you want to build a portable binary, use `make PORTABLE=1 all-bitcoin`.
 
-`BB_RPC_URL_<coin alias>`: Overrides `ipc.rpc_url_template` while generating package definitions so you can target
-hosted HTTP RPC endpoints without editing coin JSON. The root `Makefile` forwards any `BB_RPC_URL_*` variables into the
+`BB_RPC_URL_HTTP_<coin alias>`: Overrides `ipc.rpc_url_template` while generating package definitions so you can target
+hosted HTTP RPC endpoints without editing coin JSON. The root `Makefile` forwards any `BB_RPC_URL_HTTP_*` variables into the
 Docker build/test containers.
 
 `BB_RPC_URL_WS_<coin alias>`: Overrides `ipc.rpc_url_ws_template` for WebSocket subscriptions. It should point to the
-same host as `BB_RPC_URL_<coin alias>`.
+same host as `BB_RPC_URL_HTTP_<coin alias>`.
 
 Example:
-`BB_RPC_URL_ethereum=http://backend_hostname:1234 BB_RPC_URL_WS_ethereum_archive=ws://backend_hostname:1234 make deb-ethereum_archive`.
+`BB_RPC_URL_HTTP_ethereum=http://backend_hostname:1234 BB_RPC_URL_WS_ethereum_archive=ws://backend_hostname:1234 make deb-ethereum_archive`.
 
 `BB_RPC_BIND_HOST_<coin alias>`: Overrides backend RPC bind host during package generation. Defaults to `127.0.0.1`
 to avoid unintended exposure. Example: `BB_RPC_BIND_HOST_ethereum=0.0.0.0 make deb-ethereum`.
diff --git a/docs/config.md b/docs/config.md
index e43f1f83..d004d936 100644
--- a/docs/config.md
+++ b/docs/config.md
@@ -36,8 +36,8 @@ Good examples of coin configuration are
 
 * `ipc` – Defines how Blockbook connects its back-end service.
     * `rpc_url_template` – Template that defines URL of back-end RPC service. See note on templates below. You can
-      override it at build time by setting `BB_RPC_URL_<coin alias>` (for example,
-      `BB_RPC_URL_ethereum=http://backend_hostname:1234`), which is used as-is during template generation.
+      override it at build time by setting `BB_RPC_URL_HTTP_<coin alias>` (for example,
+      `BB_RPC_URL_HTTP_ethereum=http://backend_hostname:1234`), which is used as-is during template generation.
     * `rpc_url_ws_template` – Template that defines URL of back-end WebSocket RPC service for subscriptions. You can
       override it at build time by setting `BB_RPC_URL_WS_<coin alias>` and it should point to the same host as
       `rpc_url_template`.
diff --git a/docs/env.md b/docs/env.md
index e881671e..da924ba3 100644
--- a/docs/env.md
+++ b/docs/env.md
@@ -12,10 +12,10 @@ Some behavior of Blockbook can be modified by environment variables. The variabl
 
 ## Build-time variables
 
--   `BB_RPC_URL_<coin alias>` - Overrides `ipc.rpc_url_template` during package/config generation so build and
+-   `BB_RPC_URL_HTTP_<coin alias>` - Overrides `ipc.rpc_url_template` during package/config generation so build and
     integration-test tooling can target hosted HTTP RPC endpoints without editing coin JSON.
 -   `BB_RPC_URL_WS_<coin alias>` - Overrides `ipc.rpc_url_ws_template` for WebSocket subscriptions; should point to
-    the same host as `BB_RPC_URL_<coin alias>`.
+    the same host as `BB_RPC_URL_HTTP_<coin alias>`.
 -   `BB_RPC_BIND_HOST_<coin alias>` - Overrides backend RPC bind host during package/config generation; when set to
     `0.0.0.0`, RPC stays restricted unless `BB_RPC_ALLOW_IP_<coin alias>` is set.
 -   `BB_RPC_ALLOW_IP_<coin alias>` - Overrides backend RPC allow list for UTXO configs (e.g. `rpcallowip`), defaulting
diff --git a/docs/testing.md b/docs/testing.md
index bb48a8a3..fe2bb5d0 100644
--- a/docs/testing.md
+++ b/docs/testing.md
@@ -55,7 +55,7 @@ For simplicity, URLs and credentials of back-end services, where are tests going
 from *blockbook/configs/coins*, the same place from where are production configuration files generated. There are general
 URLs that link to *localhost*. If you need run tests against remote servers, there are few options how to do it:
 
-* set `BB_RPC_URL_<coin alias>` to override `rpc_url_template` during template generation (forwarded into Docker by the root `Makefile`)
+* set `BB_RPC_URL_HTTP_<coin alias>` to override `rpc_url_template` during template generation (forwarded into Docker by the root `Makefile`)
 * set `BB_RPC_URL_WS_<coin alias>` to override `rpc_url_ws_template` for WebSocket subscriptions when needed
 * temporarily change config
 * SSH tunneling – `ssh -nNT -L 8030:localhost:8030 remote-server`
diff --git a/tests/config_loader_test.go b/tests/config_loader_test.go
index 2db080c9..310984bb 100644
--- a/tests/config_loader_test.go
+++ b/tests/config_loader_test.go
@@ -12,7 +12,7 @@ import (
 func TestLoadBlockchainCfgEnvOverride(t *testing.T) {
 	const wantHTTP = "http://backend_hostname:1234"
 	const wantWS = "ws://backend_hostname:1234"
-	t.Setenv("BB_RPC_URL_ethereum", wantHTTP)
+	t.Setenv("BB_RPC_URL_HTTP_ethereum", wantHTTP)
 	t.Setenv("BB_RPC_URL_WS_ethereum", wantWS)
 
 	cfg := bchain.LoadBlockchainCfg(t, "ethereum")