diff --git a/e2e/utils.sh b/e2e/utils.sh
index 8d26c9e..6c32fae 100644
--- a/e2e/utils.sh
+++ b/e2e/utils.sh
@@ -1,6 +1,6 @@
 set -e
 
-GIT_ROOT_DIR=$(git rev-parse --show-toplevel)
+GIT_ROOT_DIR="$(git rev-parse --show-toplevel)"
 
 load "$GIT_ROOT_DIR"/e2e/bats-support/load
 load "$GIT_ROOT_DIR"/e2e/bats-assert/load
diff --git a/extensions/nns/e2e/tests/nns.bash b/extensions/nns/e2e/tests/nns.bash
index 8fb1cb1..78a68d5 100755
--- a/extensions/nns/e2e/tests/nns.bash
+++ b/extensions/nns/e2e/tests/nns.bash
@@ -1,6 +1,6 @@
 #!/usr/bin/env bats
 
-export GIT_ROOT_DIR=$(git rev-parse --show-toplevel)
+export GIT_ROOT_DIR="$(git rev-parse --show-toplevel)"
 export CARGO_HOME="$HOME"
 
 load "$GIT_ROOT_DIR"/e2e/utils.sh