diff --git a/src/share/native/sun/java2d/opengl/OGLBufImgOps.c b/src/share/native/sun/java2d/opengl/OGLBufImgOps.c
index 046018c81155c72fc8ab76679b308a0c29d1b827..b7e59341cf23ef4c0f942545657bad551e7497f8 100644
--- a/src/share/native/sun/java2d/opengl/OGLBufImgOps.c
+++ b/src/share/native/sun/java2d/opengl/OGLBufImgOps.c
@@ -636,6 +636,9 @@ OGLBufImgOps_EnableLookupOp(OGLContext *oglc, jlong pSrcOps,
                 "OGLBufImgOps_EnableLookupOp: short=%d num=%d len=%d off=%d",
                 shortData, numBands, bandLength, offset);
 
+    for (i = 0; i < 4; i++) {
+        bands[i] = NULL;
+    }
     RETURN_IF_NULL(oglc);
     RETURN_IF_NULL(srcOps);
     RESET_PREVIOUS_OP();
diff --git a/src/windows/native/sun/java2d/d3d/D3DBufImgOps.cpp b/src/windows/native/sun/java2d/d3d/D3DBufImgOps.cpp
index 5cf48427950360c4bf232682003d337d74d1acf9..b8b1ec892c12e641d804f9e5f3b622c684f577e1 100644
--- a/src/windows/native/sun/java2d/d3d/D3DBufImgOps.cpp
+++ b/src/windows/native/sun/java2d/d3d/D3DBufImgOps.cpp
@@ -201,6 +201,9 @@ D3DBufImgOps_EnableLookupOp(D3DContext *d3dc,
     int i;
     jint flags = 0;
 
+    for (i = 0; i < 4; i++) {
+        bands[i] = NULL;
+    }
     J2dTraceLn4(J2D_TRACE_INFO,
                 "D3DBufImgOps_EnableLookupOp: short=%d num=%d len=%d off=%d",
                 shortData, numBands, bandLength, offset);