diff --git a/3rdparty/ext_lzma/CMakeLists.txt b/3rdparty/ext_lzma/CMakeLists.txt
index de7779a8fd..b33d2b1c11 100644
--- a/3rdparty/ext_lzma/CMakeLists.txt
+++ b/3rdparty/ext_lzma/CMakeLists.txt
@@ -1,56 +1,56 @@
 SET(PREFIX_ext_lzma "${EXTPREFIX}" )
 if (MINGW)
     if ("${CMAKE_SIZEOF_VOID_P}" EQUAL "8") # 64 bits
         ExternalProject_Add( ext_lzma
             DOWNLOAD_DIR ${EXTERNALS_DOWNLOAD_DIR}
             URL https://tukaani.org/xz/xz-5.2.4-windows.zip
             URL_MD5 3a4467e74e1eafb89b517aae7044e46c
 
             INSTALL_DIR ${PREFIX_ext_lzma}
             CONFIGURE_COMMAND ""
             BUILD_COMMAND ${CMAKE_COMMAND} -E echo Deploying 64-bit liblzma.dll
             INSTALL_COMMAND ${CMAKE_COMMAND} -E copy <SOURCE_DIR>/bin_x86-64/liblzma.dll ${PREFIX_ext_lzma}/bin/
                     COMMAND ${CMAKE_COMMAND} -E copy <SOURCE_DIR>/bin_x86-64/liblzma.a ${PREFIX_ext_lzma}/bin/
-                    #COMMAND ${CMAKE_COMMAND} -E copy <SOURCE_DIR>/include/lzma.h ${PREFIX_ext_lzma}/include
-                    #COMMAND ${CMAKE_COMMAND} -E copy_directory <SOURCE_DIR>/include/lzma ${PREFIX_ext_lzma}/include/lzma
+                    COMMAND ${CMAKE_COMMAND} -E copy <SOURCE_DIR>/include/lzma.h ${PREFIX_ext_lzma}/include
+                    COMMAND ${CMAKE_COMMAND} -E copy_directory <SOURCE_DIR>/include/lzma ${PREFIX_ext_lzma}/include/lzma
             
             UPDATE_COMMAND ""
         )
     
     else() # 32 bits
 
             ExternalProject_Add( ext_lzma
             DOWNLOAD_DIR ${EXTERNALS_DOWNLOAD_DIR}
             URL https://tukaani.org/xz/xz-5.2.4-windows.zip
             URL_MD5 3a4467e74e1eafb89b517aae7044e46c
             
             INSTALL_DIR ${PREFIX_ext_lzma}
             CONFIGURE_COMMAND ""
             BUILD_COMMAND ${CMAKE_COMMAND} -E echo Deploying 32-bit liblzma.dll
             INSTALL_COMMAND ${CMAKE_COMMAND} -E copy <SOURCE_DIR>/bin_i686-sse2/liblzma.dll ${PREFIX_ext_lzma}/bin/
                     COMMAND ${CMAKE_COMMAND} -E copy <SOURCE_DIR>/bin_i686-sse2/liblzma.a ${PREFIX_ext_lzma}/bin/
-                    #COMMAND ${CMAKE_COMMAND} -E copy <SOURCE_DIR>/include/lzma.h ${PREFIX_ext_lzma}/include
-                    #COMMAND ${CMAKE_COMMAND} -E copy_directory <SOURCE_DIR>/include/lzma ${PREFIX_ext_lzma}/include/lzma
+                    COMMAND ${CMAKE_COMMAND} -E copy <SOURCE_DIR>/include/lzma.h ${PREFIX_ext_lzma}/include
+                    COMMAND ${CMAKE_COMMAND} -E copy_directory <SOURCE_DIR>/include/lzma ${PREFIX_ext_lzma}/include/lzma
 
 
 
             UPDATE_COMMAND ""
         )
     
     endif()
 else ()
     ExternalProject_Add( ext_lzma
         DOWNLOAD_DIR ${EXTERNALS_DOWNLOAD_DIR}
         URL http://tukaani.org/xz/xz-5.2.3.tar.xz
         URL_MD5 60fb79cab777e3f71ca43d298adacbd5
         
         INSTALL_DIR ${PREFIX_ext_lzma}
         CONFIGURE_COMMAND ./configure --prefix=${PREFIX_ext_lzma} --disable-xz --disable-xzdec --disable-lzmadec --disable-lzmainfo --disable-lzma-links --disable-scripts --disable-doc --disable-static --enable-shared ${GLOBAL_AUTOMAKE_PROFILE}  
         BUILD_COMMAND make
         INSTALL_COMMAND make install
         
         UPDATE_COMMAND ""
         BUILD_IN_SOURCE 1
     )
 
 endif ()
diff --git a/3rdparty/ext_tiff/CMakeLists.txt b/3rdparty/ext_tiff/CMakeLists.txt
index f4e3db88d1..65c5f97870 100644
--- a/3rdparty/ext_tiff/CMakeLists.txt
+++ b/3rdparty/ext_tiff/CMakeLists.txt
@@ -1,11 +1,11 @@
 SET(EXTPREFIX_tiff "${EXTPREFIX}" )
 ExternalProject_Add( ext_tiff
 	DOWNLOAD_DIR ${EXTERNALS_DOWNLOAD_DIR}
 	URL http://files.kde.org/krita/build/dependencies/tiff-4.0.9.tar.gz
 	URL_MD5 54bad211279cc93eb4fca31ba9bfdc79
 
     INSTALL_DIR ${EXTPREFIX_tiff}
-    CMAKE_ARGS -DCMAKE_INSTALL_PREFIX=${EXTPREFIX_tiff} -DCMAKE_BUILD_TYPE=${GLOBAL_BUILD_TYPE} ${GLOBAL_PROFILE} -Dlzma=OFF
+    CMAKE_ARGS -DCMAKE_INSTALL_PREFIX=${EXTPREFIX_tiff} -DCMAKE_BUILD_TYPE=${GLOBAL_BUILD_TYPE} ${GLOBAL_PROFILE}
 	
     UPDATE_COMMAND ""
 )