diff --git a/src/common/cmdline.c b/src/common/cmdline.c
index 4b7021d54..8d338028b 100644
--- a/src/common/cmdline.c
+++ b/src/common/cmdline.c
@@ -170,14 +170,14 @@ static void ExpandFile (CmdLine* L, const char* Name)
 
 
 
-void InitCmdLine (int* aArgCount, char** aArgVec[], const char* aProgName)
+void InitCmdLine (unsigned* aArgCount, char** aArgVec[], const char* aProgName)
 /* Initialize command line parsing. aArgVec is the argument array terminated by
  * a NULL pointer (as usual), ArgCount is the number of valid arguments in the
  * array. Both arguments are remembered in static storage.
  */
 {
     CmdLine	L;
-    int         I;
+    unsigned    I;
 
     /* Get the program name from argv[0] but strip a path */
     if (*(aArgVec)[0] == 0) {
diff --git a/src/common/cmdline.h b/src/common/cmdline.h
index 97f27924e..ce8f1e1ba 100644
--- a/src/common/cmdline.h
+++ b/src/common/cmdline.h
@@ -71,7 +71,7 @@ struct LongOpt {
 
 
 
-void InitCmdLine (int* aArgCount, char** aArgVec[], const char* aProgName);
+void InitCmdLine (unsigned* aArgCount, char** aArgVec[], const char* aProgName);
 /* Initialize command line parsing. aArgVec is the argument array terminated by
  * a NULL pointer (as usual), ArgCount is the number of valid arguments in the
  * array. Both arguments are remembered in static storage.