diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1024016..7e6ea20 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -365,7 +365,7 @@ IF(PA_BUILD_SHARED)
   ADD_LIBRARY(portaudio SHARED ${PA_INCLUDES} ${PA_COMMON_INCLUDES} ${PA_SOURCES} ${PA_NON_UNICODE_SOURCES} ${PA_EXTRA_SHARED_SOURCES})
   SET_PROPERTY(TARGET portaudio APPEND_STRING PROPERTY COMPILE_DEFINITIONS ${PA_PRIVATE_COMPILE_DEFINITIONS})
   TARGET_INCLUDE_DIRECTORIES(portaudio PRIVATE ${PA_PRIVATE_INCLUDE_PATHS})
-  TARGET_INCLUDE_DIRECTORIES(portaudio PUBLIC "$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>")
+  TARGET_INCLUDE_DIRECTORIES(portaudio PUBLIC "$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>" "$<INSTALL_INTERFACE:include>")
   TARGET_LINK_LIBRARIES(portaudio ${PA_LIBRARY_DEPENDENCIES})
 ENDIF()
 
@@ -374,7 +374,7 @@ IF(PA_BUILD_STATIC)
   ADD_LIBRARY(portaudio_static STATIC ${PA_INCLUDES} ${PA_COMMON_INCLUDES} ${PA_SOURCES} ${PA_NON_UNICODE_SOURCES})
   SET_PROPERTY(TARGET portaudio_static APPEND_STRING PROPERTY COMPILE_DEFINITIONS ${PA_PRIVATE_COMPILE_DEFINITIONS})
   TARGET_INCLUDE_DIRECTORIES(portaudio_static PRIVATE ${PA_PRIVATE_INCLUDE_PATHS})
-  TARGET_INCLUDE_DIRECTORIES(portaudio_static PUBLIC "$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>")
+  TARGET_INCLUDE_DIRECTORIES(portaudio_static PUBLIC "$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>" "$<INSTALL_INTERFACE:include>")
   TARGET_LINK_LIBRARIES(portaudio_static ${PA_LIBRARY_DEPENDENCIES})
   IF(NOT PA_LIBNAME_ADD_SUFFIX)
     SET_PROPERTY(TARGET portaudio_static PROPERTY OUTPUT_NAME portaudio)