diff --git a/src/configure.c b/src/configure.c
index df0e430..d5c6d88 100644
--- a/src/configure.c
+++ b/src/configure.c
@@ -229,7 +229,7 @@ int configure(ConfigurePrefs * prefs, String const * directory)
 	int ret;
 	Configure configure;
 	configArray * ca;
-	const int flags = prefs->flags;
+	const unsigned int flags = prefs->flags;
 	int i;
 	Config * p;
 
diff --git a/src/configure.h b/src/configure.h
index f25c20f..e67d7e8 100644
--- a/src/configure.h
+++ b/src/configure.h
@@ -129,7 +129,7 @@ extern const struct ExtensionType * sExtensionType;
 /* types */
 typedef struct _ConfigurePrefs
 {
-	int flags;
+	unsigned int flags;
 	char * basedir;
 	char * bindir;
 	char * destdir;