diff --git a/misc/cgo/fortran/test.bash b/misc/cgo/fortran/test.bash
index 9350dbe2d6..d397dcb682 100755
--- a/misc/cgo/fortran/test.bash
+++ b/misc/cgo/fortran/test.bash
@@ -13,6 +13,7 @@ if ! $FC helloworld/helloworld.f90 -o main.exe >& /dev/null; then
   echo "skipping Fortran test: could not build helloworld.f90 with $FC"
   exit 0
 fi
+rm -f main.exe
 
 if ! go test; then
   echo "FAIL: go test"