diff --git a/tools/run_tests/build_php.sh b/tools/run_tests/build_php.sh
index ca4f73657b145804874a106d8f9cbf6fab2b6c1a..af81daf44f3049f13bbee83e236acd742f125829 100755
--- a/tools/run_tests/build_php.sh
+++ b/tools/run_tests/build_php.sh
@@ -8,7 +8,7 @@ cd $(dirname $0)/../..
 export GRPC_DIR=`pwd`
 
 # make the libraries
-make -j shared_c
+make -j static_c
 
 # build php
 cd src/php