diff --git a/pgrep.c b/pgrep.c
index 0a2c4cc6..d2f2b654 100644
--- a/pgrep.c
+++ b/pgrep.c
@@ -296,7 +296,7 @@ static int conv_uid (const char *restrict name, struct el *restrict e)
         xwarnx(_("invalid user name: %s"), name);
         return 0;
     }
-    e->num = pwd->pw_uid;
+    e->num = (int) pwd->pw_uid;
     return 1;
 }
 
@@ -313,7 +313,7 @@ static int conv_gid (const char *restrict name, struct el *restrict e)
         xwarnx(_("invalid group name: %s"), name);
         return 0;
     }
-    e->num = grp->gr_gid;
+    e->num = (int) grp->gr_gid;
     return 1;
 }