diff --git a/src/arch/x86/Makefile.inc b/src/arch/x86/Makefile.inc
index 868f159fee..e41bc26b96 100644
--- a/src/arch/x86/Makefile.inc
+++ b/src/arch/x86/Makefile.inc
@@ -343,7 +343,7 @@ else
 endif
 	$(NM) $@ | grep -q " [DdBb] "; if [ $$? -eq 0 ]; then \
 		echo "Forbidden global variables in romstage:"; \
-		$(NM) $@ | grep " [DdBb] "; test "$(CONFIG_CPU_AMD_AGESA)" == y; \
+		$(NM) $@ | grep " [DdBb] "; test "$(CONFIG_CPU_AMD_AGESA)" = y; \
 		else true; fi
 
 $(objcbfs)/romstage_xip.debug: $$(romstage-objs) $(objgenerated)/romstage_xip.ld