diff --git a/CMakeExternals/PatchITK-3.20.cmake b/CMakeExternals/PatchITK-3.20.cmake
index f47fd6f6f4..e0359a2c60 100644
--- a/CMakeExternals/PatchITK-3.20.cmake
+++ b/CMakeExternals/PatchITK-3.20.cmake
@@ -1,13 +1,25 @@
 # Called by ITK.cmake (ExternalProject_Add) as a patch for ITK to work witk GDCM 2.0.18
-# Updates library dependencies
 
-# read whole file
+# First patch
+# updates library dependencies
+# read whole file CMakeLists.txt
 file(STRINGS CMakeLists.txt sourceCode NEWLINE_CONSUME)
 
 # substitute dependency to gdcmMSFF by dependencies for more libraries
 string(REGEX REPLACE "gdcmMSFF" "gdcmMSFF gdcmDICT gdcmCommon gdcmDSED" sourceCode ${sourceCode})
 
 # set variable CONTENTS, which is substituted in TEMPLATE_FILE
 set(CONTENTS ${sourceCode})
 configure_file(${TEMPLATE_FILE} CMakeLists.txt @ONLY)
 
+# second patch
+# read whole file
+file(STRINGS Code/Common/itkLandmarkBasedTransformInitializer.h sourceCode2 NEWLINE_CONSUME)
+
+# substitute dependency to gdcmMSFF by dependencies for more libraries
+string(REGEX REPLACE "typedef typename ParametersType::ValueType +ParameterValueType;" "typedef typename TransformType::ScalarType                      ParameterValueType;" sourceCode2 ${sourceCode2})
+
+# set variable CONTENTS, which is substituted in TEMPLATE_FILE
+set(CONTENTS ${sourceCode2})
+configure_file(${TEMPLATE_FILE} Code/Common/itkLandmarkBasedTransformInitializer.h @ONLY)
+