diff --git a/gio/tests/Makefile.am b/gio/tests/Makefile.am
index 20cae5b3a..04866bfcd 100644
--- a/gio/tests/Makefile.am
+++ b/gio/tests/Makefile.am
@@ -530,7 +530,7 @@ testmeta_DATA = $(filter-out $(xfail_tests) $(developer_only_tests),$(test_progs
 %.test: %$(EXEEXT) Makefile
 	$(AM_V_GEN) (echo '[Test]' > $@.tmp; \
 	 echo 'Type=session' >> $@.tmp; \
-	 echo 'Exec=env G_TEST_DATA=$(pkglibexecdir)/installed-tests $(pkglibexecdir)/installed-tests/$<' >> $@.tmp; \
+	 echo 'Exec=$(pkglibexecdir)/installed-tests/$<' >> $@.tmp; \
 	 mv $@.tmp $@)
 
 %.desktop.insttest: %.desktop
diff --git a/glib/tests/Makefile.am b/glib/tests/Makefile.am
index 0ed7d21f4..5ee09dd79 100644
--- a/glib/tests/Makefile.am
+++ b/glib/tests/Makefile.am
@@ -178,7 +178,7 @@ endif
 %.test: %$(EXEEXT) Makefile
 	$(AM_V_GEN) (echo '[Test]' > $@.tmp; \
 	 echo 'Type=session' >> $@.tmp; \
-	 echo 'Exec=env G_TEST_DATA=$(pkglibexecdir)/installed-tests $(pkglibexecdir)/installed-tests/$<' >> $@.tmp; \
+	 echo 'Exec=$(pkglibexecdir)/installed-tests/$<' >> $@.tmp; \
 	 mv $@.tmp $@)
 
 atomic_CFLAGS  = $(AM_CFLAGS)
diff --git a/gobject/tests/Makefile.am b/gobject/tests/Makefile.am
index 390f41af8..988a13900 100644
--- a/gobject/tests/Makefile.am
+++ b/gobject/tests/Makefile.am
@@ -59,7 +59,7 @@ testmeta_DATA = $(TEST_PROGS:=.test)
 %.test: %$(EXEEXT) Makefile
 	$(AM_V_GEN) (echo '[Test]' > $@.tmp; \
 	 echo 'Type=session' >> $@.tmp; \
-	 echo 'Exec=env G_TEST_DATA=$(pkglibexecdir)/installed-tests $(pkglibexecdir)/installed-tests/$<' >> $@.tmp; \
+	 echo 'Exec=$(pkglibexecdir)/installed-tests/$<' >> $@.tmp; \
 	 mv $@.tmp $@)