diff --git a/core/language/en-GB/Misc.multids b/core/language/en-GB/Misc.multids
index f792d0c8d..de619181d 100644
--- a/core/language/en-GB/Misc.multids
+++ b/core/language/en-GB/Misc.multids
@@ -30,6 +30,7 @@ Error/DeserializeOperator/MissingOperand: Filter Error: Missing operand for 'des
 Error/DeserializeOperator/UnknownDeserializer: Filter Error: Unknown deserializer provided as operand for the 'deserialize' operator
 Error/Filter: Filter error
 Error/FilterSyntax: Syntax error in filter expression
+Error/FilterPragma: Filter Error: Unknown pragma filter
 Error/FilterRunPrefix: Filter Error: Unknown prefix for filter run
 Error/IsFilterOperator: Filter Error: Unknown parameter for the 'is' filter operator
 Error/FormatFilterOperator: Filter Error: Unknown suffix for the 'format' filter operator
diff --git a/core/modules/filters.js b/core/modules/filters.js
index 43770768b..d3504d2ba 100644
--- a/core/modules/filters.js
+++ b/core/modules/filters.js
@@ -371,7 +371,7 @@ exports.compileFilter = function(filterString,options) {
 					default:
 						return function(results,source,widget) {
 							results.clear();
-							results.push($tw.language.getString("Error/FilterRunPrefix"));
+							results.push($tw.language.getString("Error/FilterPragma"));
 						};
 				}
 				return function(results,source,widget) {
diff --git a/editions/test/tiddlers/tests/data/filters/DefaultFilterRunPrefixPragma.tid b/editions/test/tiddlers/tests/data/filters/DefaultFilterRunPrefixPragma.tid
index 8fb64bdec..dd2f09527 100644
--- a/editions/test/tiddlers/tests/data/filters/DefaultFilterRunPrefixPragma.tid
+++ b/editions/test/tiddlers/tests/data/filters/DefaultFilterRunPrefixPragma.tid
@@ -13,7 +13,9 @@ title: Output
 
 (<$text text={{{ 1 1 ::defaultprefix:all 1 1 +[join[X]] }}}/>)
 
+(<$text text={{{ ::nonexistent X }}}/>)
+
 +
 title: ExpectedResult
 
-<p>(1X1X1Y1)</p><p>(1X1X1)</p>
\ No newline at end of file
+<p>(1X1X1Y1)</p><p>(1X1X1)</p><p>(Filter Error: Unknown pragma for filter)</p>
\ No newline at end of file