diff --git a/CMakeLists.txt b/CMakeLists.txt
index c077a23..fecb397 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -49,7 +49,7 @@ function(config_library target)
 
   target_include_directories(${target} PUBLIC
     $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
-    $<INSTALL_INTERFACE:include>
+    $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
   )
 
   set_target_properties(${target} PROPERTIES
diff --git a/libllhttp.pc.in b/libllhttp.pc.in
index 67d280a..4ad300b 100644
--- a/libllhttp.pc.in
+++ b/libllhttp.pc.in
@@ -1,10 +1,10 @@
 prefix=@CMAKE_INSTALL_PREFIX@
-exec_prefix=@CMAKE_INSTALL_PREFIX@
-libdir=@CMAKE_INSTALL_PREFIX@/@CMAKE_INSTALL_LIBDIR@
-includedir=@CMAKE_INSTALL_PREFIX@/@CMAKE_INSTALL_INCLUDEDIR@
+exec_prefix=@CMAKE_INSTALL_FULL_BINDIR@
+libdir=@CMAKE_INSTALL_FULL_LIBDIR@
+includedir=@CMAKE_INSTALL_FULL_INCLUDEDIR@
 
 Name: libllhttp
 Description: Node.js llhttp Library
 Version: @PROJECT_VERSION@
 Libs: -L${libdir} -lllhttp
-Cflags: -I${includedir}
\ No newline at end of file
+Cflags: -I${includedir}