diff --git a/make_helpers/build_macros.mk b/make_helpers/build_macros.mk
index a5c93a6..71cf18b 100644
--- a/make_helpers/build_macros.mk
+++ b/make_helpers/build_macros.mk
@@ -558,7 +558,7 @@
 $(ELF): $(OBJS) $(DEFAULT_LINKER_SCRIPT) $(LINKER_SCRIPTS) | $(1)_dirs libraries $(BL_LIBS)
 	$$(ECHO) "  LD      $$@"
 ifdef MAKE_BUILD_STRINGS
-	$(call MAKE_BUILD_STRINGS, $(BUILD_DIR)/build_message.o)
+	$(call MAKE_BUILD_STRINGS,$(BUILD_DIR)/build_message.o)
 else
 	@echo 'const char build_message[] = "Built : "$(BUILD_MESSAGE_TIMESTAMP); \
 	       const char version_string[] = "${VERSION_STRING}"; \