diff --git a/src/common/platforms/arm/arm_nsleep100_m4.S b/src/common/platforms/arm/arm_nsleep100_m4.S
index d40820f6..afb596fa 100644
--- a/src/common/platforms/arm/arm_nsleep100_m4.S
+++ b/src/common/platforms/arm/arm_nsleep100_m4.S
@@ -26,7 +26,11 @@
 .global mgos_nsleep100_impl
 .global mgos_nsleep100_loop_count
 
+#ifdef STM32
+.section .RamFunc.mgos_nsleep100_impl
+#else
 .section .iram.mgos_nsleep100_impl
+#endif
 .type mgos_nsleep100_impl, %function
 .align 4
 
@@ -34,7 +38,11 @@ mgos_nsleep100_impl:
       ldr     r3, =mgos_nsleep100_loop_count
       ldr     r3, [r3]
       mul     r0, r3
+#ifdef STM32L4
+      mov     r1, #3
+#else
       mov     r1, #6
+#endif
       udiv    r0, r0, r1
       cbz     r0, xxx
 lxx:
diff --git a/src/common/platforms/arm/arm_nsleep100_m7.S b/src/common/platforms/arm/arm_nsleep100_m7.S
index c0e8f490..36c878fd 100644
--- a/src/common/platforms/arm/arm_nsleep100_m7.S
+++ b/src/common/platforms/arm/arm_nsleep100_m7.S
@@ -26,7 +26,11 @@
 .global mgos_nsleep100_impl
 .global mgos_nsleep100_loop_count
 
+#ifdef STM32
+.section .RamFunc.mgos_nsleep100_impl
+#else
 .section .iram.mgos_nsleep100_impl
+#endif
 .type mgos_nsleep100_impl, %function
 .align 4