diff --git a/arch/arm/config.mk b/arch/arm/config.mk
index 0550225..a3e14a8 100644
--- a/arch/arm/config.mk
+++ b/arch/arm/config.mk
@@ -40,7 +40,8 @@ ifeq ($(CONFIG_SYS_THUMB_BUILD),y)
 archprepare: checkthumb
 
 checkthumb:
-	@if test "$(call cc-version)" -lt "0404"; then \
+	@if test "$(call cc-name)" = "gcc" -a \
+			"$(call cc-version)" -lt "0404"; then \
 		echo -n '*** Your GCC does not produce working '; \
 		echo 'binaries in THUMB mode.'; \
 		echo '*** Your board is configured for THUMB mode.'; \
diff --git a/arch/powerpc/config.mk b/arch/powerpc/config.mk
index 6b44a37..b0ed374 100644
--- a/arch/powerpc/config.mk
+++ b/arch/powerpc/config.mk
@@ -41,7 +41,8 @@ archprepare: checkgcc4
 # that U-Boot wants.
 # See http://lists.denx.de/pipermail/u-boot/2012-September/135156.html
 checkgcc4:
-	@if test $(call cc-version) -lt 0400; then \
+	@if test "$(call cc-name)" = "gcc" -a \
+			$(call cc-version) -lt 0400; then \
 		echo -n '*** Your GCC is too old, please upgrade to GCC 4.x or newer'; \
 		false; \
 	fi