diff --git a/basis/tools/deprecation/deprecation.factor b/basis/tools/deprecation/deprecation.factor
index 236fd49418..1e8630418c 100644
--- a/basis/tools/deprecation/deprecation.factor
+++ b/basis/tools/deprecation/deprecation.factor
@@ -20,7 +20,7 @@ TUPLE: deprecated-usages asset usages ;
 : :deprecations ( -- )
     deprecation-notes get-global values errors. ;
 
-T{ error-type
+T{ error-type-holder
     { type +deprecation-note+ }
     { word ":deprecations" }
     { plural "deprecated word usages" }
diff --git a/basis/tools/test/test.factor b/basis/tools/test/test.factor
index 516e78b7e5..4a82a9eed4 100644
--- a/basis/tools/test/test.factor
+++ b/basis/tools/test/test.factor
@@ -21,7 +21,7 @@ SYMBOL: test-failures
 
 test-failures [ V{ } clone ] initialize
 
-T{ error-type
+T{ error-type-holder
    { type +test-failure+ }
    { word ":test-failures" }
    { plural "unit test failures" }