diff --git a/cave_commands/do b/cave_commands/do
index 2764f5f..82c69c7 100755
--- a/cave_commands/do
+++ b/cave_commands/do
@@ -1,2 +1,2 @@
 #!/usr/bin/env sh
-exec ${CAVE} resume "${@}"
+exec ${CAVE:-cave} resume "${@}"
diff --git a/cave_commands/retry b/cave_commands/retry
index 76e9424..ab4da76 100755
--- a/cave_commands/retry
+++ b/cave_commands/retry
@@ -1,2 +1,2 @@
 #!/usr/bin/env sh
-exec ${CAVE} resume --retry-failed --retry-skipped "${@}"
+exec ${CAVE:-cave} resume --retry-failed --retry-skipped "${@}"
diff --git a/cave_commands/upgrade b/cave_commands/upgrade
index 3367b7d..8fda3c9 100755
--- a/cave_commands/upgrade
+++ b/cave_commands/upgrade
@@ -1,2 +1,2 @@
 #!/usr/bin/env sh
-exec ${CAVE} resolve -c world "${@}"
+exec ${CAVE:-cave} resolve -c world "${@}"