diff --git a/source/uCEFApplication.pas b/source/uCEFApplication.pas
index 255bbd33..07934ee4 100644
--- a/source/uCEFApplication.pas
+++ b/source/uCEFApplication.pas
@@ -894,6 +894,7 @@ begin
                            CEF_SUPPORTED_VERSION_RELEASE,
                            CEF_SUPPORTED_VERSION_BUILD) then
           begin
+            {$IFDEF MSWINDOWS}
             if GetDLLHeaderMachine(LibCefPath, TempMachine) then
               case TempMachine of
                 IMAGE_FILE_MACHINE_I386 :
@@ -936,6 +937,9 @@ begin
               end
              else
               Result := True;
+            {$ELSE}
+            Result := True;
+            {$ENDIF}
           end
          else
           begin
diff --git a/source/uCEFConstants.pas b/source/uCEFConstants.pas
index ee52e86b..3cf3f1e0 100644
--- a/source/uCEFConstants.pas
+++ b/source/uCEFConstants.pas
@@ -400,17 +400,6 @@ const
   CEF4DELPHI_URL = 'https://github.com/salvadordf/CEF4Delphi';
   CRLF           = #13 + #10;
 
-  IMAGE_FILE_MACHINE_UNKNOWN  = 0;
-  IMAGE_FILE_MACHINE_I386     = $014c; // Intel x86
-  IMAGE_FILE_MACHINE_IA64     = $0200; // Intel Itanium Processor Family (IPF)
-  IMAGE_FILE_MACHINE_AMD64    = $8664; // x64 (AMD64 or EM64T)
-  IMAGE_FILE_MACHINE_R3000_BE = $160;  // MIPS big-endian
-  IMAGE_FILE_MACHINE_R3000    = $162;  // MIPS little-endian, 0x160 big-endian
-  IMAGE_FILE_MACHINE_R4000    = $166;  // MIPS little-endian
-  IMAGE_FILE_MACHINE_R10000   = $168;  // MIPS little-endian
-  IMAGE_FILE_MACHINE_ALPHA    = $184;  // Alpha_AXP }
-  IMAGE_FILE_MACHINE_POWERPC  = $1F0;  // IBM PowerPC Little-Endian
-
 implementation
 
 end.