diff --git a/src/core/SkColorFilter.cpp b/src/core/SkColorFilter.cpp
index 468ff5c..27d8bee 100644
--- a/src/core/SkColorFilter.cpp
+++ b/src/core/SkColorFilter.cpp
@@ -491,6 +491,10 @@
     }
 
     auto effect = std::get<0>(SkRuntimeEffect::Make(std::move(sksl)));
+    if (!effect) {
+        return nullptr;
+    }
+
     return effect->makeColorFilter(std::move(inputs), children.data(), children.size());
 }
 
diff --git a/src/shaders/SkRTShader.cpp b/src/shaders/SkRTShader.cpp
index f5158cd..f1a32ed 100644
--- a/src/shaders/SkRTShader.cpp
+++ b/src/shaders/SkRTShader.cpp
@@ -117,6 +117,10 @@
     }
 
     auto effect = std::get<0>(SkRuntimeEffect::Make(std::move(sksl)));
+    if (!effect) {
+        return nullptr;
+    }
+
     return effect->makeShader(std::move(inputs), children.data(), children.size(), localMPtr,
                               isOpaque);
 }