diff --git a/src/bin/df.cpp b/src/bin/df.cpp
index e1c7bac21e..c945377867 100644
--- a/src/bin/df.cpp
+++ b/src/bin/df.cpp
@@ -182,7 +182,7 @@ ShowUsage(const char *programName)
 
 
 int
-main(int32 argc, char **argv)
+main(int argc, char **argv)
 {
 	char *programName = argv[0];
 	if (strrchr(programName, '/'))