1 files changed, 1 insertions, 0 deletions
diff --git a/source/slang/diagnostics.h b/source/slang/diagnostics.h
index 9bc3b3d8c..a12de03e4 100644
--- a/source/slang/diagnostics.h
+++ b/source/slang/diagnostics.h
@@ -77,6 +77,7 @@ namespace Slang
     void printDiagnosticArg(StringBuilder& sb, int val);
     void printDiagnosticArg(StringBuilder& sb, UInt val);
     void printDiagnosticArg(StringBuilder& sb, Slang::String const& str);
+    void printDiagnosticArg(StringBuilder& sb, Slang::UnownedStringSlice const& str);
     void printDiagnosticArg(StringBuilder& sb, Name* name);
     void printDiagnosticArg(StringBuilder& sb, Decl* decl);
     void printDiagnosticArg(StringBuilder& sb, Type* type);