1 files changed, 1 insertions, 0 deletions

diff --git a/src/regress/lib/libc/dirname/dirname_test.c b/src/regress/lib/libc/dirname/dirname_test.c
index add76980cf..27d32b6eda 100644
--- a/src/regress/lib/libc/dirname/dirname_test.c
+++ b/src/regress/lib/libc/dirname/dirname_test.c
@@ -11,6 +11,7 @@
 #include <string.h>
 #include <limits.h>
 #include <errno.h>
+#include <err.h>
 
 int
 main(void)