diff --git a/arch/arm/src/stm32/stm32_allocateheap.c b/arch/arm/src/stm32/stm32_allocateheap.c
index 68b437a6701..19ff0557675 100644
--- a/arch/arm/src/stm32/stm32_allocateheap.c
+++ b/arch/arm/src/stm32/stm32_allocateheap.c
@@ -466,7 +466,7 @@
 
 #    if CONFIG_MM_REGIONS < 2
 #      ifdef CONFIG_STM32_HAVE_CCM
-#        error "CCM SRAM excluded from the heap because CONFIG_MM_REGIONS < 2"
+#        warning "CCM SRAM excluded from the heap because CONFIG_MM_REGIONS < 2"
 #      endif
 #      undef CONFIG_STM32_CCMEXCLUDE
 #      define CONFIG_STM32_CCMEXCLUDE 1