diff --git a/3rdparty/ext_gsl/CMakeLists.txt b/3rdparty/ext_gsl/CMakeLists.txt
index 3bd8182f47..57eb443d34 100644
--- a/3rdparty/ext_gsl/CMakeLists.txt
+++ b/3rdparty/ext_gsl/CMakeLists.txt
@@ -1,30 +1,30 @@
 #
 # From https://github.com/ampl/gsl. which adds CMake support to gsl
 #
-if (ANDROID)
+if (UNIX)
 SET(EXTPREFIX_gsl "${EXTPREFIX}" )
 ExternalProject_Add( ext_gsl
 
     DOWNLOAD_DIR ${EXTERNALS_DOWNLOAD_DIR}
     URL http://files.kde.org/krita/build/dependencies/gsl-2.3.0.tar.gz
     URL_MD5 7e0478f7c5e62696fef480b9a46f708c
 
     PATCH_COMMAND ${PATCH_COMMAND} -p1 -i ${CMAKE_CURRENT_SOURCE_DIR}/gsl-android.patch
     INSTALL_DIR ${EXTPREFIX_gsl}
     CMAKE_ARGS -DCMAKE_INSTALL_PREFIX=${EXTPREFIX_gsl} -DCMAKE_BUILD_TYPE=${GLOBAL_BUILD_TYPE} ${GLOBAL_PROFILE} -DBUILD_SHARED_LIBS=ON -DBUILD_TESTING=OFF
     UPDATE_COMMAND ""
 )
 else()
 SET(EXTPREFIX_gsl "${EXTPREFIX}" )
 ExternalProject_Add( ext_gsl
 
     DOWNLOAD_DIR ${EXTERNALS_DOWNLOAD_DIR}
     URL http://files.kde.org/krita/build/dependencies/gsl-2.3.0.tar.gz
     URL_MD5 7e0478f7c5e62696fef480b9a46f708c
 
     INSTALL_DIR ${EXTPREFIX_gsl}
     CMAKE_ARGS -DCMAKE_INSTALL_PREFIX=${EXTPREFIX_gsl} -DCMAKE_BUILD_TYPE=${GLOBAL_BUILD_TYPE} ${GLOBAL_PROFILE} -DBUILD_TESTING=OFF
     UPDATE_COMMAND ""
 )
 
 endif()