diff --git a/python/mxnet/contrib/amp/lists/symbol.py b/python/mxnet/contrib/amp/lists/symbol.py
index 397f4775f8cd..2146853a6866 100644
--- a/python/mxnet/contrib/amp/lists/symbol.py
+++ b/python/mxnet/contrib/amp/lists/symbol.py
@@ -368,6 +368,9 @@
     'arctanh',
     '_sparse_arcsin',
     '_sparse_arctanh',
+    '_contrib_MultiBoxDetection',
+    '_contrib_MultiBoxPrior',
+    '_contrib_MultiBoxTarget',
 
     # Exponents
     'exp',
@@ -575,9 +578,6 @@
     'stack',
     '_Maximum',
     '_Minimum',
-    '_contrib_MultiBoxDetection',
-    '_contrib_MultiBoxPrior',
-    '_contrib_MultiBoxTarget',
     '_contrib_MultiProposal',
     '_contrib_PSROIPooling',
     '_contrib_Proposal',