diff --git a/tests/support/test.tcl b/tests/support/test.tcl
index 4e68905a5a24..c875cfd80307 100644
--- a/tests/support/test.tcl
+++ b/tests/support/test.tcl
@@ -5,7 +5,7 @@ set ::tests_failed {}
 
 proc assert {condition} {
     if {![uplevel 1 expr $condition]} {
-        error "assertion:Expected '$value' to be true"
+        error "assertion:Expected condition '$condition' to be true"
     }
 }