diff --git a/.sweep.bash.swp b/.sweep.bash.swp
deleted file mode 100644
index ca7f226d72cdbe641a984e5d365615224d9a43d2..0000000000000000000000000000000000000000
Binary files a/.sweep.bash.swp and /dev/null differ
diff --git a/sweep.bash b/sweep.bash
index f21d589d6d35e66463a0f92209b244b7d20f5aef..4b83ec09d99628481105d5267f337d2773c55df7 100755
--- a/sweep.bash
+++ b/sweep.bash
@@ -60,7 +60,7 @@ if [ "${#DESIGN_FILES[@]}" -lt 1 ]; then
     echo "Error: No design files (DESIGN_FILES) provided." && exit -1
 fi
 for file in "${DESIGN_FILES[@]}"; do
-    if [ -f "$file" ]; then
+    if ! [ -f "$file" ]; then
         echo "Error: Could not locate design file '$file'." && exit -1
     fi
 done