diff --git a/interface/CMakeLists.txt b/interface/CMakeLists.txt
index 1a152e4707..18d5b9bd70 100644
--- a/interface/CMakeLists.txt
+++ b/interface/CMakeLists.txt
@@ -52,12 +52,13 @@ foreach(SUBDIR avatar devices renderer ui starfield location scripting voxels pa
   set(INTERFACE_SRCS ${INTERFACE_SRCS} "${SUBDIR_SRCS}")
 endforeach(SUBDIR)
 
-# grab .mm files for OSX
-if (APPLE) 
-    file(GLOB INTERFACE_OBJCPP_SRCS src/SpeechRecognizer.mm)
+# Add SpeechRecognizer if on OS X, otherwise remove
+if (APPLE)
+    file(GLOB INTERFACE_OBJCPP_SRCS "src/SpeechRecognizer.mm")
     set(INTERFACE_SRCS ${INTERFACE_SRCS} ${INTERFACE_OBJCPP_SRCS})
 else ()
-    list(REMOVE_ITEM "src/SpeechRecognizer.h")
+    get_filename_component(SPEECHRECOGNIZER_H "src/SpeechRecognizer.h" ABSOLUTE)
+    list(REMOVE_ITEM INTERFACE_SRCS ${SPEECHRECOGNIZER_H})
 endif ()
 
 find_package(Qt5 COMPONENTS Core Gui Multimedia Network OpenGL Script Svg WebKit WebKitWidgets Xml UiTools)