diff --git a/modules/python/src2/cv2_util.cpp b/modules/python/src2/cv2_util.cpp
index 5858c6372b..e5751045df 100644
--- a/modules/python/src2/cv2_util.cpp
+++ b/modules/python/src2/cv2_util.cpp
@@ -47,8 +47,6 @@ int numpyTypeToCvDepth(int typenum)
     // 'long' is 64-bit on LP64 but 32-bit on LLP64, so decide by size, not by name.
     case NPY_LONG:      return NPY_SIZEOF_LONG == 8 ? CV_64S : CV_32S;
     case NPY_ULONG:     return NPY_SIZEOF_LONG == 8 ? CV_64U : CV_32U;
-    // Map the 32-bit case: it is numpy's int32 on LLP64, and output arrays cannot be cast.
-    case NPY_LONG:      return NPY_SIZEOF_LONG == 4 ? CV_32S : -1;
     case NPY_HALF:      return CV_16F;
     case NPY_FLOAT:     return CV_32F;
     case NPY_DOUBLE:    return CV_64F;