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-rw-r--r--src/common/util.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/common/util.c b/src/common/util.c
index 45639e342..243c5393b 100644
--- a/src/common/util.c
+++ b/src/common/util.c
@@ -23,6 +23,9 @@
#include <windows.h>
#endif
+#ifdef HAVE_CTYPE_H
+#include <ctype.h>
+#endif
#include <stdlib.h>
#include <stdio.h>
#include <string.h>