diff --git a/src/OpenFOAM/db/dlLibraryTable/dlLibraryTable.C b/src/OpenFOAM/db/dlLibraryTable/dlLibraryTable.C
index eb8dd373d..dafff7d2a 100644
--- a/src/OpenFOAM/db/dlLibraryTable/dlLibraryTable.C
+++ b/src/OpenFOAM/db/dlLibraryTable/dlLibraryTable.C
@@ -68,13 +68,13 @@ bool Foam::dlLibraryTable::open(const fileName& functionLibName)
 {
     if (functionLibName.size())
     {
-        void* functionLibPtr = 
+        void* functionLibPtr =
             dlopen(functionLibName.c_str(), RTLD_LAZY|RTLD_GLOBAL);
 
 #ifdef darwin
         if(!functionLibPtr && functionLibName.ext()=="so") {
             fileName lName=functionLibName.lessExt()+".dylib";
-            functionLibPtr = 
+            functionLibPtr =
                 dlopen(lName.c_str(), RTLD_LAZY|RTLD_GLOBAL);
         }
 #endif
diff --git a/src/fvAgglomerationMethods/MGridGenGamgAgglomeration/MGridGenGAMGAgglomeration.H b/src/fvAgglomerationMethods/MGridGenGamgAgglomeration/MGridGenGAMGAgglomeration.H
index 64141b1ca..4f982b9f0 100644
--- a/src/fvAgglomerationMethods/MGridGenGamgAgglomeration/MGridGenGAMGAgglomeration.H
+++ b/src/fvAgglomerationMethods/MGridGenGamgAgglomeration/MGridGenGAMGAgglomeration.H
@@ -43,6 +43,10 @@ SourceFiles
 extern "C"
 {
 #   include "mgridgen.h"
+#   ifdef darwin
+#       undef FALSE
+#       undef TRUE
+#   endif
 }