diff --git a/src/hammer.c b/src/hammer.c
index 14db6a8..2333a79 100644
--- a/src/hammer.c
+++ b/src/hammer.c
@@ -17,7 +17,7 @@
 
 #include <assert.h>
 #include <ctype.h>
-#include <error.h>
+#include <err.h>
 #include <limits.h>
 #include <stdarg.h>
 #include <string.h>