diff --git a/src/Diagnostics.cc b/src/Diagnostics.cc
index 2e0badf91..0d911bdb4 100644
--- a/src/Diagnostics.cc
+++ b/src/Diagnostics.cc
@@ -556,6 +556,7 @@ namespace bolt {
         writePrefix(E);
         write("a type class instance ");
         writeTypeclassName(E.TypeclassName);
+        write(" ");
         writeType(E.Ty);
         write(" was not found.\n\n");
         writeNode(E.Source);