diff --git a/t/test-lib.sh b/t/test-lib.sh
index a8f239df8f..e654155a2e 100755
--- a/t/test-lib.sh
+++ b/t/test-lib.sh
@@ -158,6 +158,8 @@ test_done () {
 # Test the binaries we have just built.  The tests are kept in
 # t/ subdirectory and are run in trash subdirectory.
 PATH=$(pwd)/..:$PATH
+GIT_EXEC_PATH=$(pwd)/..
+export GIT_EXEC_PATH
 
 # Test repository
 test=trash