diff --git a/git-cvsimport.perl b/git-cvsimport.perl
index ba23eb8eeb..2954fb846e 100755
--- a/git-cvsimport.perl
+++ b/git-cvsimport.perl
@@ -779,7 +779,7 @@ sub commit {
 		$xtag =~ tr/_/\./ if ( $opt_u );
 		$xtag =~ s/[\/]/$opt_s/g;
 
-		system('git-tag', $xtag, $cid) == 0
+		system('git-tag', '-f', $xtag, $cid) == 0
 			or die "Cannot create tag $xtag: $!\n";
 
 		print "Created tag '$xtag' on '$branch'\n" if $opt_v;
diff --git a/git-svnimport.perl b/git-svnimport.perl
index 8c17fb5ae2..d3ad5b904f 100755
--- a/git-svnimport.perl
+++ b/git-svnimport.perl
@@ -873,7 +873,7 @@ sub commit {
 
 		$dest =~ tr/_/\./ if $opt_u;
 
-		system('git-tag', $dest, $cid) == 0
+		system('git-tag', '-f', $dest, $cid) == 0
 			or die "Cannot create tag $dest: $!\n";
 
 		print "Created tag '$dest' on '$branch'\n" if $opt_v;