diff --git a/sources/libClangSharp/ClangSharp.cpp b/sources/libClangSharp/ClangSharp.cpp
index 02c76f2d..ca3e2b4c 100644
--- a/sources/libClangSharp/ClangSharp.cpp
+++ b/sources/libClangSharp/ClangSharp.cpp
@@ -993,6 +993,9 @@ CXCursor clangsharp_Cursor_getDefaultArg(CXCursor C) {
         }
 
         if (const ParmVarDecl* PVD = dyn_cast<ParmVarDecl>(D)) {
+            if (PVD->hasUninstantiatedDefaultArg()) {
+                return MakeCXCursor(PVD->getUninstantiatedDefaultArg(), PVD, getCursorTU(C));
+            }
             return MakeCXCursor(PVD->getDefaultArg(), PVD, getCursorTU(C));
         }
     }