1 files changed, 1 insertions, 1 deletions
diff --git a/tools/emulator/opengl/system/OpenglSystemCommon/QemuPipeStream.cpp b/tools/emulator/opengl/system/OpenglSystemCommon/QemuPipeStream.cpp
index b632d84f4..50c3d8bb1 100644
--- a/tools/emulator/opengl/system/OpenglSystemCommon/QemuPipeStream.cpp
+++ b/tools/emulator/opengl/system/OpenglSystemCommon/QemuPipeStream.cpp
@@ -117,7 +117,7 @@ const unsigned char *QemuPipeStream::readFully(void *buf, size_t len)
     //DBG(">> QemuPipeStream::readFully %d\n", len);
     if (!valid()) return NULL;
     if (!buf) {
-        ERR("QemuPipeStream::readFully failed, buf=NULL, len %d", len);
+        if (len>0) ERR("QemuPipeStream::readFully failed, buf=NULL, len %d", len);
         return NULL;  // do not allow NULL buf in that implementation
     }
     size_t res = len;