diff --git a/gbdk-lib/Makefile.common b/gbdk-lib/Makefile.common
index e7797513..903463f8 100644
--- a/gbdk-lib/Makefile.common
+++ b/gbdk-lib/Makefile.common
@@ -26,6 +26,7 @@ CFLAGS = -I$(TOPDIR)/include -D__PORT_$(PORT) -D__TARGET_$(THIS)
 CFLAGS += -m$(PORT)
 CFLAGS += --max-allocs-per-node 50000
 CFLAGS += --fsigned-char
+CFLAGS += --no-optsdcc-in-asm
 CC = 	$(SCC)
 BUILD = $(TOPDIR)/build/$(THIS)
 LIB = 	$(BUILD)/$(THIS).lib
diff --git a/gbdk-support/lcc/gb.c b/gbdk-support/lcc/gb.c
index 574c7545..8688fd27 100644
--- a/gbdk-support/lcc/gb.c
+++ b/gbdk-support/lcc/gb.c
@@ -46,7 +46,7 @@ static struct {
 		{ "comopt",		"--noinvariant --noinduction" },
 		{ "com",		"%sdccdir%sdcc" },
 		{ "comflag",	"-c"},
-		{ "comdefault",	"-m%port% --no-std-crt0 --fsigned-char --use-stdout -D__PORT_%port% -D__TARGET_%plat% "},
+		{ "comdefault",	"-m%port% --no-std-crt0 --fsigned-char --use-stdout --no-optsdcc-in-asm -D__PORT_%port% -D__TARGET_%plat% "},
 		/* asdsgb assembler defaults:
 			-p: disable pagination
 			-o: create object file