diff --git a/build.sh b/build.sh
index 82ab4dca..83f61801 100755
--- a/build.sh
+++ b/build.sh
@@ -82,7 +82,9 @@ rm -f *.h
 rm -f *.cpp
 rm -f .qmake.stash
 rm -f Makefile
-mv HGScanner.probkp HGScanner.pro
+if [ -f HGScanner.probkp ]; then
+    mv HGScanner.probkp HGScanner.pro
+fi