diff --git a/src/api-impl-jni/android_graphics_Bitmap.c b/src/api-impl-jni/android_graphics_Bitmap.c
index ad9aa009..2ec24f9e 100644
--- a/src/api-impl-jni/android_graphics_Bitmap.c
+++ b/src/api-impl-jni/android_graphics_Bitmap.c
@@ -159,6 +159,18 @@ JNIEXPORT void JNICALL Java_android_graphics_Bitmap_nativeCopyPixelsToBuffer(JNI
 	release_nio_buffer(env, array_ref, array);
 }
 
+JNIEXPORT void JNICALL Java_android_graphics_Bitmap_nativeCopyPixelsFromBuffer(JNIEnv *env, jclass this, jlong _pixbuf, jobject buffer)
+{
+	GdkPixbuf *pixbuf = _PTR(_pixbuf);
+	size_t pixbuf_size = gdk_pixbuf_get_rowstride(pixbuf) * (gdk_pixbuf_get_height(pixbuf) - 1)
+	                     + /* last row: */ gdk_pixbuf_get_width(pixbuf) * ((gdk_pixbuf_get_n_channels(pixbuf) * gdk_pixbuf_get_bits_per_sample(pixbuf) + 7) / 8);
+	jarray array_ref;
+	jbyte *array;
+	uint8_t *pixels = get_nio_buffer(env, buffer, &array_ref, &array);
+	memcpy(gdk_pixbuf_get_pixels(pixbuf), pixels, pixbuf_size);
+	release_nio_buffer(env, array_ref, array);
+}
+
 JNIEXPORT void JNICALL Java_android_graphics_Bitmap_native_1unref_1texture(JNIEnv *env, jclass class, jlong texture_ptr)
 {
 	GdkTexture *texture = GDK_TEXTURE(_PTR(texture_ptr));
diff --git a/src/api-impl-jni/generated_headers/android_graphics_Bitmap.h b/src/api-impl-jni/generated_headers/android_graphics_Bitmap.h
index c7f16fa7..5958ae4c 100644
--- a/src/api-impl-jni/generated_headers/android_graphics_Bitmap.h
+++ b/src/api-impl-jni/generated_headers/android_graphics_Bitmap.h
@@ -182,10 +182,10 @@ JNIEXPORT void JNICALL Java_android_graphics_Bitmap_nativeCopyPixelsToBuffer
 /*
  * Class:     android_graphics_Bitmap
  * Method:    nativeCopyPixelsFromBuffer
- * Signature: (ILjava/nio/Buffer;)V
+ * Signature: (JLjava/nio/Buffer;)V
  */
 JNIEXPORT void JNICALL Java_android_graphics_Bitmap_nativeCopyPixelsFromBuffer
-  (JNIEnv *, jclass, jint, jobject);
+  (JNIEnv *, jclass, jlong, jobject);
 
 /*
  * Class:     android_graphics_Bitmap
diff --git a/src/api-impl/android/graphics/Bitmap.java b/src/api-impl/android/graphics/Bitmap.java
index 8452fdde..64f27581 100644
--- a/src/api-impl/android/graphics/Bitmap.java
+++ b/src/api-impl/android/graphics/Bitmap.java
@@ -580,7 +580,7 @@ public final class Bitmap {
 			throw new RuntimeException("Buffer not large enough for pixels");
 		}
 
-		nativeCopyPixelsFromBuffer(mNativeBitmap, src);
+		nativeCopyPixelsFromBuffer(pixbuf, src);
 
 		// now update the buffer's position
 		int position = src.position();
@@ -1651,9 +1651,8 @@ public final class Bitmap {
 	private static native void nativeSetPixels(int nativeBitmap, int[] colors,
 						   int offset, int stride, int x, int y,
 						   int width, int height, boolean isPremultiplied);
-	private static native void nativeCopyPixelsToBuffer(long pixbuf,
-							    Buffer dst);
-	private static native void nativeCopyPixelsFromBuffer(int nb, Buffer src);
+	private static native void nativeCopyPixelsToBuffer(long pixbuf, Buffer dst);
+	private static native void nativeCopyPixelsFromBuffer(long pixbuf, Buffer src);
 	private static native int nativeGenerationId(int nativeBitmap);
 
 	// returns a new bitmap built from the native bitmap's alpha, and the paint