</precomp-headers-exclude>
         </if>
         
-        <if cond="IS_MSVC_PRJ and BUILDING_LIB=='1'">
+        <if cond="IS_MSVC_PRJ=='1' and BUILDING_LIB=='1'">
             <msvc-file-group>Common Sources:src/common/*</msvc-file-group>
             <msvc-file-group>MSW Sources:src/msw/*</msvc-file-group>
             <msvc-file-group>Generic Sources:src/generic/*</msvc-file-group>
     <define-tag name="wx-lib" rules="exe,dll,module">
         <sys-lib>$(wxwin.libToLink(value))</sys-lib>
         <ldlibs>$(wxwin.extraLdflags(value))</ldlibs>
-        <if cond="IS_MSVC_PRJ and MONOLITHIC=='0'">
+        <if cond="IS_MSVC_PRJ=='1' and MONOLITHIC=='0'">
             <depends-on-dsp>$(wxwin.makeDspDependency(value))</depends-on-dsp>
         </if>
     </define-tag>