diff --git a/usr.sbin/pkg_install/delete/main.c b/usr.sbin/pkg_install/delete/main.c
index c75d73a627a1..3100ae35772b 100644
--- a/usr.sbin/pkg_install/delete/main.c
+++ b/usr.sbin/pkg_install/delete/main.c
@@ -121,7 +121,7 @@ main(int argc, char **argv)
 		 * package name.  Otherwise we've come across a trailing '/' and
 		 * need to continue our quest.
 		 */
-		if (isalpha(*pkgs_split) || ((MatchType == MATCH_GLOB) && \
+		if (isalnum(*pkgs_split) || ((MatchType == MATCH_GLOB) && \
 		    strpbrk(pkgs_split, "*?[]") != NULL)) {
 		    *argv = pkgs_split;
 		    break;
diff --git a/usr.sbin/pkg_install/info/main.c b/usr.sbin/pkg_install/info/main.c
index d98593895ff0..b22c54c3d3c0 100644
--- a/usr.sbin/pkg_install/info/main.c
+++ b/usr.sbin/pkg_install/info/main.c
@@ -240,7 +240,7 @@ main(int argc, char **argv)
 		 * we've come across a trailing '/' and need to continue our
 		 * quest.
 		 */
-		if (isalpha(*pkgs_split) || ((MatchType == MATCH_GLOB) && \
+		if (isalnum(*pkgs_split) || ((MatchType == MATCH_GLOB) && \
 		    strpbrk(pkgs_split, "*?[]") != NULL)) {
 		    *argv = pkgs_split;
 		    break;