diff --git a/urlApp/src/URLDriver.cpp b/urlApp/src/URLDriver.cpp
index 1d0efa4..4d844da 100644
--- a/urlApp/src/URLDriver.cpp
+++ b/urlApp/src/URLDriver.cpp
@@ -120,7 +120,14 @@ asynStatus URLDriver::readImage()
             break;
         case 32:
             dataType = NDUInt32;
+// MagickLibVersion has 3 hex digits in ImageMagick and 6 hex digits in GraphicsMagick
+#if (MagickLibVersion < 0x1000 && MagickLibVersion >= 0x700)
+// ImageMagick >= 7 no longer has IntegerPixel and fixes LongPixel to 32 bits
+            storageType = LongPixel;
+#else
+// ImageMagick <= 6 and GraphicsMagick have 32 bits IntegerPixel and 32 or 64 bits LongPixel
             storageType = IntegerPixel;
+#endif
             break;
         default:
             asynPrint(pasynUserSelf, ASYN_TRACE_ERROR,