diff --git a/cmake/ftxui_export.cmake b/cmake/ftxui_export.cmake
index 9df4e7d..ae0fcff 100644
--- a/cmake/ftxui_export.cmake
+++ b/cmake/ftxui_export.cmake
@@ -4,5 +4,5 @@ add_library(ftxui::component ALIAS component)
 export(
   TARGETS screen dom component
   NAMESPACE ftxui::
-  FILE ${PROJECT_BINARY_DIR}/ftxui-targets.cmake
+  FILE "${PROJECT_BINARY_DIR}/ftxui-targets.cmake"
 )
diff --git a/cmake/ftxui_find_google_test.cmake b/cmake/ftxui_find_google_test.cmake
index 293bd7b..c7941ce 100644
--- a/cmake/ftxui_find_google_test.cmake
+++ b/cmake/ftxui_find_google_test.cmake
@@ -27,7 +27,7 @@ set(BUILD_GMOCK OFF CACHE INTERNAL "")
 set(INSTALL_GTEST OFF CACHE INTERNAL "")
 set(gtest_force_shared_crt ON CACHE INTERNAL "")
 add_subdirectory(
-  ${googletest_SOURCE_DIR}
-  ${googletest_BINARY_DIR}
+  "${googletest_SOURCE_DIR}"
+  "${googletest_BINARY_DIR}"
   EXCLUDE_FROM_ALL
 )
diff --git a/cmake/ftxui_install.cmake b/cmake/ftxui_install.cmake
index 0ad6579..87ca8e8 100644
--- a/cmake/ftxui_install.cmake
+++ b/cmake/ftxui_install.cmake
@@ -15,7 +15,7 @@ install(
 
 install(
   DIRECTORY include/ftxui
-  DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
+  DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}"
   )
 
 # ------------------------------------------------------------------------------
@@ -24,7 +24,7 @@ install(
 install(
   EXPORT ftxui-targets
   NAMESPACE ftxui::
-  DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/ftxui
+  DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/ftxui"
   )
 
 # ------------------------------------------------------------------------------
@@ -32,21 +32,21 @@ install(
 # needed to support users of find_package()
 # ------------------------------------------------------------------------------
 configure_package_config_file(
-  ${CMAKE_CURRENT_SOURCE_DIR}/cmake/ftxui-config.cmake.in
-  ${CMAKE_CURRENT_BINARY_DIR}/cmake/ftxui-config.cmake
-  INSTALL_DESTINATION ${CMAKE_INSTALL_LIBDIR}/ftxui/cmake
+  "${CMAKE_CURRENT_SOURCE_DIR}/cmake/ftxui-config.cmake.in"
+  "${CMAKE_CURRENT_BINARY_DIR}/cmake/ftxui-config.cmake"
+  INSTALL_DESTINATION "${CMAKE_INSTALL_LIBDIR}/ftxui/cmake"
   PATH_VARS CMAKE_INSTALL_INCLUDEDIR
   )
 write_basic_package_version_file(
-  ${CMAKE_CURRENT_BINARY_DIR}/cmake/ftxui-config-version.cmake
+  "${CMAKE_CURRENT_BINARY_DIR}/cmake/ftxui-config-version.cmake"
   VERSION ${PACKAGE_VERSION}
   COMPATIBILITY SameMajorVersion
   )
 install(
   FILES
-  ${CMAKE_CURRENT_BINARY_DIR}/cmake/ftxui-config.cmake
-  ${CMAKE_CURRENT_BINARY_DIR}/cmake/ftxui-config-version.cmake
-  DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/ftxui
+  "${CMAKE_CURRENT_BINARY_DIR}/cmake/ftxui-config.cmake"
+  "${CMAKE_CURRENT_BINARY_DIR}/cmake/ftxui-config-version.cmake"
+  DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/ftxui"
   )
 
 # ------------------------------------------------------------------------------
@@ -55,6 +55,6 @@ install(
 # ------------------------------------------------------------------------------
 configure_file(ftxui.pc.in ${CMAKE_CURRENT_BINARY_DIR}/ftxui.pc @ONLY)
 install(
-  FILES ${CMAKE_CURRENT_BINARY_DIR}/ftxui.pc
+  FILES "${CMAKE_CURRENT_BINARY_DIR}/ftxui.pc"
   DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig"
   )
diff --git a/cmake/iwyu.cmake b/cmake/iwyu.cmake
index 029c9f6..d7d2a4a 100644
--- a/cmake/iwyu.cmake
+++ b/cmake/iwyu.cmake
@@ -1,7 +1,7 @@
 find_program(iwyu_path NAMES include-what-you-use iwyu)
 if(iwyu_path)
   set_property(TARGET ${lib}
-    PROPERTY ${iwyu_path} -Xiwyu
-      --mapping_file ${CMAKE_CURRENT_SOURCE_DIR}/iwyu.imp
+    PROPERTY "${iwyu_path}" -Xiwyu
+      --mapping_file "${CMAKE_CURRENT_SOURCE_DIR}/iwyu.imp"
   )
 endif()