diff --git a/src/3rdParty/salomesmesh/CMakeLists.txt b/src/3rdParty/salomesmesh/CMakeLists.txt
index e9aac0e84d7e..8bdb04f57891 100644
--- a/src/3rdParty/salomesmesh/CMakeLists.txt
+++ b/src/3rdParty/salomesmesh/CMakeLists.txt
@@ -17,31 +17,32 @@ if(CMAKE_COMPILER_IS_CLANGXX)
     unset(_flag_found CACHE)
     check_cxx_compiler_flag("-Wno-deprecated-copy" _flag_found)
     if (_flag_found)
-        set(CMAKE_CXX_FLAGS " ${CMAKE_CXX_FLAGS} -Wno-deprecated-copy")
+        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-deprecated-copy")
     endif ()
 
     unset(_flag_found CACHE)
     check_cxx_compiler_flag("-Wno-missing-field-initializers" _flag_found)
     if (_flag_found)
-        set(CMAKE_CXX_FLAGS " ${CMAKE_CXX_FLAGS} -Wno-missing-field-initializers")
+        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-missing-field-initializers")
     endif ()
 elseif(CMAKE_COMPILER_IS_GNUCXX)
     unset(_flag_found CACHE)
     check_cxx_compiler_flag("-Wno-unused-result" _flag_found)
     if (_flag_found)
-        set(CMAKE_CXX_FLAGS " ${CMAKE_CXX_FLAGS} -Wno-unused-result")
+        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-unused-result")
+        set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-unused-result")
     endif ()
 
     unset(_flag_found CACHE)
     check_cxx_compiler_flag("-Wno-maybe-uninitialized" _flag_found)
     if (_flag_found)
-        set(CMAKE_CXX_FLAGS " ${CMAKE_CXX_FLAGS} -Wno-maybe-uninitialized")
+        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-maybe-uninitialized")
     endif ()
 
     unset(_flag_found CACHE)
     check_cxx_compiler_flag("-Wno-missing-field-initializers" _flag_found)
     if (_flag_found)
-        set(CMAKE_CXX_FLAGS " ${CMAKE_CXX_FLAGS} -Wno-missing-field-initializers")
+        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-missing-field-initializers")
     endif ()
 endif()