1 files changed, 5 insertions, 0 deletions
diff --git a/error.h b/error.h
index e4f5351..7c75263 100644
--- a/error.h
+++ b/error.h
@@ -1,4 +1,9 @@
+#ifndef HENCE_ERROR_H
+#define HENCE_ERROR_H
+
 #include <stdio.h>
 
 #define emit_error(...) fprintf(stderr, "Error: " __VA_ARGS__)
 #define emit_info(...) fprintf(stdout, "Info : " __VA_ARGS__)
+
+#endif