diff --git a/Samples/SharedLibrary/CMakeLists.txt b/Samples/SharedLibrary/CMakeLists.txt
index ca02b32921..4effec394a 100644
--- a/Samples/SharedLibrary/CMakeLists.txt
+++ b/Samples/SharedLibrary/CMakeLists.txt
@@ -52,12 +52,16 @@ add_custom_command(
 
 # Step 4: Combine the PEF data fork with a resource fork containing a cfrg resource:
 
+if (REZ_INCLUDE_PATH)
+    set(REZ_INCLUDE_FLAG -I${REZ_INCLUDE_PATH})
+endif()
+
 add_custom_command(
     OUTPUT Library.bin Library Library.dsk Library.ad "%Library.ad"
     COMMAND ${REZ} 
             ${REZ_FLAGS}
             ${CMAKE_CURRENT_SOURCE_DIR}/library.r
-            -I${REZ_INCLUDE_PATH}
+            ${REZ_INCLUDE_FLAG}
             -o "Library.bin" --cc "Library.dsk" --cc "Library"
             --cc "%Library.ad"
             -t "shlb" -c "????"
diff --git a/cmake/add_application.cmake b/cmake/add_application.cmake
index 1a723dc286..dc7f2a1c29 100644
--- a/cmake/add_application.cmake
+++ b/cmake/add_application.cmake
@@ -93,7 +93,7 @@ function(add_application name)
             OUTPUT ${name}.bin ${name}.APPL ${name}.dsk ${name}.ad "%${name}.ad"
             COMMAND ${REZ} ${REZ_FLAGS}
                     ${REZ_TEMPLATES_PATH}/Retro68APPL.r
-                    -I${REZ_INCLUDE_PATH}
+                    ${rez_include_options}
                     --copy "${name}.code.bin"
                     -o "${name}.bin"
                     -t "${ARGS_TYPE}" -c "${ARGS_CREATOR}"
@@ -120,7 +120,7 @@ function(add_application name)
             COMMAND ${REZ} 
                     ${REZ_FLAGS}
                     ${REZ_TEMPLATE}
-                    -I${REZ_INCLUDE_PATH}
+                    ${rez_include_options}
                     -DCFRAG_NAME="\\"${name}\\""
                     -o "${name}.bin" --cc "${name}.dsk" --cc "${name}.APPL"
                     --cc "%${name}.ad"