https://github.com/ImageMagick/ImageMagick/issues/793
diff --git a/MagickCore/opencl.c b/MagickCore/opencl.c
index 78e81fb..0191a80 100644
--- a/MagickCore/opencl.c
+++ b/MagickCore/opencl.c
@@ -1305,7 +1305,7 @@
 
   openCL_library->clGetProgramBuildInfo(device->program,device->deviceID,
     CL_PROGRAM_BUILD_LOG,0,NULL,&log_size);
-  log=(char*)AcquireMagickMemory(log_size);
+  log=(char*)AcquireCriticalMemory(log_size);
   openCL_library->clGetProgramBuildInfo(device->program,device->deviceID,
     CL_PROGRAM_BUILD_LOG,log_size,log,&log_size);