diff --git a/src/runtime/config.h b/src/runtime/config.h
index 658f8c2b..c7386fb9 100644
--- a/src/runtime/config.h
+++ b/src/runtime/config.h
@@ -1,5 +1,5 @@
 #ifndef CONFIG_H
-#define CONFIG_h
+#define CONFIG_H
 
 /*
  * In here are items that can be configured, but that does not depend on the platform.
@@ -8,4 +8,4 @@
 #define HEAP_CELLS 50000000
 #define STACK_SIZE 100000
 
-#endif // CONFIG_H
\ No newline at end of file
+#endif // CONFIG_H