diff --git a/examples/cpp/helloworld/Makefile b/examples/cpp/helloworld/Makefile
index 6af92347aa3..9af7337fd1b 100644
--- a/examples/cpp/helloworld/Makefile
+++ b/examples/cpp/helloworld/Makefile
@@ -21,10 +21,12 @@ CPPFLAGS += `pkg-config --cflags protobuf grpc`
 CXXFLAGS += -std=c++11
 ifeq ($(SYSTEM),Darwin)
 LDFLAGS += -L/usr/local/lib `pkg-config --libs protobuf grpc++ grpc`\
+           -pthread\
            -lgrpc++_reflection\
            -ldl
 else
 LDFLAGS += -L/usr/local/lib `pkg-config --libs protobuf grpc++ grpc`\
+           -pthread\
            -Wl,--no-as-needed -lgrpc++_reflection -Wl,--as-needed\
            -ldl
 endif
diff --git a/examples/cpp/route_guide/Makefile b/examples/cpp/route_guide/Makefile
index 48a2073ba8c..3bf61cb76f1 100644
--- a/examples/cpp/route_guide/Makefile
+++ b/examples/cpp/route_guide/Makefile
@@ -21,10 +21,12 @@ CPPFLAGS += `pkg-config --cflags protobuf grpc`
 CXXFLAGS += -std=c++11
 ifeq ($(SYSTEM),Darwin)
 LDFLAGS += -L/usr/local/lib `pkg-config --libs protobuf grpc++`\
+					 -pthread\
            -lgrpc++_reflection\
            -ldl
 else
 LDFLAGS += -L/usr/local/lib `pkg-config --libs protobuf grpc++`\
+           -pthread\
            -Wl,--no-as-needed -lgrpc++_reflection -Wl,--as-needed\
            -ldl
 endif