diff --git a/src/objective-c/tests/run_tests.sh b/src/objective-c/tests/run_tests.sh
index 608ae6884b6..62c4e10b993 100755
--- a/src/objective-c/tests/run_tests.sh
+++ b/src/objective-c/tests/run_tests.sh
@@ -38,7 +38,7 @@ trap 'kill -9 `jobs -p` ; echo "EXIT TIME:  $(date)"' EXIT
 # element of the pipe fails.
 # TODO(jcanizales): Use xctool instead? Issue #2540.
 set -o pipefail
-XCODEBUILD_FILTER='(^CompileC |^Ld |^.*clang |^ *cd |^ *export |^Libtool |^.*libtool |^CpHeader |^ *builtin-copy )'
+XCODEBUILD_FILTER='(^CompileC |^Ld |^ *[^ ]*clang |^ *cd |^ *export |^Libtool |^ *[^ ]*libtool |^CpHeader |^ *builtin-copy )'
 echo "TIME:  $(date)"
 xcodebuild \
     -workspace Tests.xcworkspace \