diff --git a/lib/WebGUI/Form/Image.pm b/lib/WebGUI/Form/Image.pm
index 82571bd19..a36220ee1 100644
--- a/lib/WebGUI/Form/Image.pm
+++ b/lib/WebGUI/Form/Image.pm
@@ -140,7 +140,7 @@ sub getValue {
 			my @files = @{$storage->getFiles};
 			my @images = grep{$storage->isImage($_)} @files; # Put all filenames that isImage returns true for into @images
 			if ($self->get('forceImageOnly')) {
-				$storage->deleteFile($_) for grep{ ! $_ ~~ @images } @files; # Search @files for filenames that are not in @images and delete them
+				$storage->deleteFile($_) for grep{ ! ($_ ~~ @images) } @files; # Search @files for filenames that are not in @images and delete them
 				@files = @images;
 			}