diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index c6c6558..679a997 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -43,7 +43,7 @@ jobs:
           cpanm --notest IPC::Run
           wget -q https://github.com/postgres/postgres/archive/refs/tags/REL_14_5.tar.gz
           tar xf REL_14_5.tar.gz
-      - run: make prove_installcheck PROVE=prove PROVE_FLAGS="-I ./postgres-REL_14_5/src/test/perl" PERL5LIB="/Users/runner/perl5/lib/perl5"
+      - run: make prove_installcheck PROVE_FLAGS="-I ./postgres-REL_14_5/src/test/perl" PERL5LIB="/Users/runner/perl5/lib/perl5"
   windows:
     runs-on: windows-latest
     if: ${{ !startsWith(github.ref_name, 'mac') }}
diff --git a/Makefile b/Makefile
index b6a4f91..64d08cc 100644
--- a/Makefile
+++ b/Makefile
@@ -40,6 +40,11 @@ PG_CONFIG ?= pg_config
 PGXS := $(shell $(PG_CONFIG) --pgxs)
 include $(PGXS)
 
+# for Mac
+ifeq ($(PROVE),)
+	PROVE = prove
+endif
+
 # for Postgres 15
 PROVE_FLAGS += -I ./test/perl