diff --git a/common.mk b/common.mk
index 5cfc1f366d..c143db5079 100644
--- a/common.mk
+++ b/common.mk
@@ -1013,7 +1013,7 @@ info-arch: PHONY
 change: PHONY
 	$(BASERUBY) -C "$(srcdir)" ./tool/change_maker.rb $(CHANGES) > change.log
 
-fool: check test-rubyspec
+exam: check test-rubyspec
 
 love: sudo-precheck up all test install test-all
 	@echo love is all you need
diff --git a/defs/gmake.mk b/defs/gmake.mk
index 13e02276e0..96bb74a0a7 100644
--- a/defs/gmake.mk
+++ b/defs/gmake.mk
@@ -7,7 +7,7 @@ TEST_TARGETS := $(patsubst test-%,yes-test-%,$(patsubst btest-%,yes-btest-%,$(TE
 TEST_DEPENDS := $(if $(TEST_TARGETS),$(filter all main exts,$(MAKECMDGOALS)))
 TEST_DEPENDS += $(if $(filter check%,$(MAKECMDGOALS)),main)
 TEST_DEPENDS += $(if $(filter all,$(INSTALLDOC)),docs)
-CHECK_TARGETS := fool love check%
+CHECK_TARGETS := exam love check%
 
 ifneq ($(filter -O0 -Od,$(optflags)),)
 override XCFLAGS := $(filter-out -D_FORTIFY_SOURCE=%,$(XCFLAGS))
@@ -64,7 +64,7 @@ install-prereq: uninstall
 uninstall sudo-precheck: all $(if $(filter all,$(INSTALLDOC)),docs)
 endif
 
-ifneq ($(filter fool,$(MAKECMDGOALS)),)
+ifneq ($(filter exam,$(MAKECMDGOALS)),)
 test-rubyspec: check
 yes-test-all no-test-all: test
 endif