diff --git a/src/libespeak-ng/translateword.h b/src/libespeak-ng/translateword.h
index 92e32d44..f15ed654 100644
--- a/src/libespeak-ng/translateword.h
+++ b/src/libespeak-ng/translateword.h
@@ -18,7 +18,7 @@
  */
 
 #ifndef ESPEAK_NG_TRANSLATEWORD_H
-#define ESPEAK_NG_TRANSLATEWORd_H
+#define ESPEAK_NG_TRANSLATEWORD_H
 
 #include <stdbool.h>