diff --git a/src/gpu/GrBuffer.h b/src/gpu/GrBuffer.h
index 33a7f354fa..db9b1aee36 100644
--- a/src/gpu/GrBuffer.h
+++ b/src/gpu/GrBuffer.h
@@ -68,14 +68,6 @@ public:
          fMapPtr = nullptr;
      }
 
-    /**
-     * Returns the same ptr that map() returned at time of map or nullptr if the
-     * is not mapped.
-     *
-     * @return ptr to mapped buffer data or nullptr if buffer is not mapped.
-     */
-     void* mapPtr() const { return fMapPtr; }
-
     /**
      Queries whether the buffer has been mapped.
 
diff --git a/src/gpu/GrBufferAllocPool.cpp b/src/gpu/GrBufferAllocPool.cpp
index b0fa58fb06..65dc01f656 100644
--- a/src/gpu/GrBufferAllocPool.cpp
+++ b/src/gpu/GrBufferAllocPool.cpp
@@ -94,10 +94,7 @@ void GrBufferAllocPool::validate(bool unusedBlockAllowed) const {
     bool wasDestroyed = false;
     if (fBufferPtr) {
         SkASSERT(!fBlocks.empty());
-        if (fBlocks.back().fBuffer->isMapped()) {
-            GrBuffer* buf = fBlocks.back().fBuffer;
-            SkASSERT(buf->mapPtr() == fBufferPtr);
-        } else {
+        if (!fBlocks.back().fBuffer->isMapped()) {
             SkASSERT(fCpuData == fBufferPtr);
         }
     } else {