diff --git a/.github/workflows/ubuntu.yml b/.github/workflows/ubuntu.yml
index 8cff1a9..f2fc424 100644
--- a/.github/workflows/ubuntu.yml
+++ b/.github/workflows/ubuntu.yml
@@ -206,7 +206,7 @@ jobs:
       - run: env
       - name: List environment variables
         run: |
-          echo "${{env.INSTALL_DIR_FOR_ELIXIR}}"
-          echo "${{env.INSTALL_DIR_FOR_GLEAM}}"
-          echo "${{env.INSTALL_DIR_FOR_OTP}}"
-          echo "${{env.INSTALL_DIR_FOR_REBAR3}}"
+          [ -n "${INSTALL_DIR_FOR_ELIXIR}" ] && echo "${INSTALL_DIR_FOR_ELIXIR}"
+          [ -n "${INSTALL_DIR_FOR_GLEAM}"  ] && echo "${INSTALL_DIR_FOR_GLEAM}"
+          [ -n "${INSTALL_DIR_FOR_OTP}"    ] && echo "${INSTALL_DIR_FOR_OTP}"
+          [ -n "${INSTALL_DIR_FOR_REBAR3}" ] && echo "${INSTALL_DIR_FOR_REBAR3}"
diff --git a/.github/workflows/windows.yml b/.github/workflows/windows.yml
index 4923bc7..81fbbdf 100644
--- a/.github/workflows/windows.yml
+++ b/.github/workflows/windows.yml
@@ -107,7 +107,8 @@ jobs:
       - run: env
       - name: List environment variables
         run: |
-          echo "${{env.INSTALL_DIR_FOR_ELIXIR}}"
-          echo "${{env.INSTALL_DIR_FOR_GLEAM}}"
-          echo "${{env.INSTALL_DIR_FOR_OTP}}"
-          echo "${{env.INSTALL_DIR_FOR_REBAR3}}"
+          [ -n "${INSTALL_DIR_FOR_ELIXIR}" ] && echo "${INSTALL_DIR_FOR_ELIXIR}"
+          [ -n "${INSTALL_DIR_FOR_GLEAM}"  ] && echo "${INSTALL_DIR_FOR_GLEAM}"
+          [ -n "${INSTALL_DIR_FOR_OTP}"    ] && echo "${INSTALL_DIR_FOR_OTP}"
+          [ -n "${INSTALL_DIR_FOR_REBAR3}" ] && echo "${INSTALL_DIR_FOR_REBAR3}"
+        shell: bash