diff --git a/ext/intl/collator/collator_attr.h b/ext/intl/collator/collator_attr.h
index 85636cc4868..8bd91b02c1d 100644
--- a/ext/intl/collator/collator_attr.h
+++ b/ext/intl/collator/collator_attr.h
@@ -16,7 +16,7 @@
  */
 
 #ifndef COLLATOR_ATTR_H
-#define CCOLLATOR_ATTR_H
+#define COLLATOR_ATTR_H
 
 #include <php.h>