diff --git a/test/lib/library.exp b/test/lib/library.exp
index a87fe892..ab2d92b5 100644
--- a/test/lib/library.exp
+++ b/test/lib/library.exp
@@ -858,8 +858,7 @@ proc _save_env {{file ""}} {
 
 # Source bash_completion package
 proc source_bash_completion {} {
-    assert_bash_exec {BASH_COMPLETION_DIR=$(cd "$SRCDIR/.."; pwd)/completions}
-    assert_bash_exec {BASH_COMPLETION_COMPAT_DIR=$BASH_COMPLETION_DIR}
+    assert_bash_exec {BASH_COMPLETION_COMPAT_DIR=$(cd "$SRCDIR/.."; pwd)/completions}
     assert_bash_exec {BASH_COMPLETION=$(cd "$SRCDIR/.."; pwd)/bash_completion}
     assert_bash_exec {source "$BASH_COMPLETION"}
 }