diff --git a/firmware/common/hackrf_core.c b/firmware/common/hackrf_core.c
index 7cf62a97..215c5528 100644
--- a/firmware/common/hackrf_core.c
+++ b/firmware/common/hackrf_core.c
@@ -39,12 +39,10 @@
 #include "ice40_spi.h"
 #include "platform_detect.h"
 #include "clkin.h"
-#include "selftest.h"
 #include <libopencm3/lpc43xx/cgu.h>
 #include <libopencm3/lpc43xx/ccu.h>
 #include <libopencm3/lpc43xx/scu.h>
 #include <libopencm3/lpc43xx/ssp.h>
-#include <libopencm3/lpc43xx/creg.h>
 
 #if (defined HACKRF_ONE || defined PRALINE)
 	#include "portapack.h"
@@ -898,29 +896,6 @@ void cpu_clock_init(void)
 	CGU_BASE_SSP1_CLK =
 		CGU_BASE_SSP1_CLK_AUTOBLOCK(1) | CGU_BASE_SSP1_CLK_CLK_SEL(CGU_SRC_PLL1);
 
-#ifndef RAD1O
-	/* Enable 32kHz oscillator */
-	CREG_CREG0 &= ~(CREG_CREG0_PD32KHZ | CREG_CREG0_RESET32KHZ);
-	CREG_CREG0 |= CREG_CREG0_EN32KHZ;
-
-	/* Allow 1ms to start up. */
-	delay_us_at_mhz(1000, 204);
-
-	/* Use frequency monitor to check 32kHz oscillator is running. */
-	CGU_FREQ_MON = CGU_FREQ_MON_RCNT(511) | CGU_FREQ_MON_CLK_SEL(CGU_SRC_32K);
-	CGU_FREQ_MON |= CGU_FREQ_MON_MEAS_MASK;
-	while (CGU_FREQ_MON & CGU_FREQ_MON_MEAS_MASK)
-		;
-	uint32_t count =
-		(CGU_FREQ_MON & CGU_FREQ_MON_FCNT_MASK) >> CGU_FREQ_MON_FCNT_SHIFT;
-	// We should see a single count, because 511 cycles of the 12MHz internal
-	// RC oscillator corresponds to 1.39 cycles of the 32768Hz clock.
-	selftest.rtc_osc_ok = (count == 1);
-	if (!selftest.rtc_osc_ok) {
-		selftest.report.pass = false;
-	}
-#endif
-
 #if (defined JAWBREAKER || defined HACKRF_ONE || defined PRALINE)
 	/* Disable unused clocks */
 	/* Start with PLLs */
diff --git a/firmware/common/selftest.h b/firmware/common/selftest.h
index 95e0184e..f083de3c 100644
--- a/firmware/common/selftest.h
+++ b/firmware/common/selftest.h
@@ -40,9 +40,6 @@ typedef struct {
 #endif
 	uint8_t si5351_rev_id;
 	bool si5351_readback_ok;
-#ifndef RAD1O
-	bool rtc_osc_ok;
-#endif
 #ifdef PRALINE
 	bool sgpio_rx_ok;
 	bool xcvr_loopback_ok;
diff --git a/firmware/hackrf_usb/usb_api_selftest.c b/firmware/hackrf_usb/usb_api_selftest.c
index 7f251cc1..29cbc8a1 100644
--- a/firmware/hackrf_usb/usb_api_selftest.c
+++ b/firmware/hackrf_usb/usb_api_selftest.c
@@ -22,7 +22,6 @@
 #include <stdio.h>
 #include <stddef.h>
 #include <usb_queue.h>
-#include <libopencm3/lpc43xx/cgu.h>
 #include "usb_api_selftest.h"
 #include "selftest.h"
 #include "platform_detect.h"
@@ -95,11 +94,6 @@ void generate_selftest_report(void)
 	}
 	append(&s, &c, "\n");
 #endif
-#ifndef RAD1O
-	append(&s, &c, "32kHz oscillator: ");
-	append(&s, &c, selftest.rtc_osc_ok ? "PASS" : "FAIL");
-	append(&s, &c, "\n");
-#endif
 #ifdef PRALINE
 	append(&s, &c, "SGPIO RX test: ");
 	append(&s, &c, selftest.sgpio_rx_ok ? "PASS" : "FAIL");