diff --git a/src/lib/tvgGlCanvas.cpp b/src/lib/tvgGlCanvas.cpp
index 755d8eb7..7f2c04b7 100644
--- a/src/lib/tvgGlCanvas.cpp
+++ b/src/lib/tvgGlCanvas.cpp
@@ -86,7 +86,7 @@ unique_ptr<GlCanvas> GlCanvas::gen() noexcept
 
     return canvas;
 #endif
-    return unique_ptr<GlCanvas>(nullptr);
+    return nullptr;
 }
 
 
diff --git a/src/lib/tvgSwCanvas.cpp b/src/lib/tvgSwCanvas.cpp
index bb504705..e958ea26 100644
--- a/src/lib/tvgSwCanvas.cpp
+++ b/src/lib/tvgSwCanvas.cpp
@@ -85,7 +85,7 @@ unique_ptr<SwCanvas> SwCanvas::gen() noexcept
 
     return canvas;
 #endif
-    return unique_ptr<SwCanvas>(nullptr);
+    return nullptr;
 }
 
 #endif /* _TVG_SWCANVAS_CPP_ */