diff --git a/contrib/10.readline/CMakeLists.txt b/contrib/10.readline/CMakeLists.txt
index ec24feae..6a8b4fd8 100644
--- a/contrib/10.readline/CMakeLists.txt
+++ b/contrib/10.readline/CMakeLists.txt
@@ -5,6 +5,7 @@ set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${PROJECT_SOURCE_DIR}/contrib/10.rea
 find_package(Libedit)
 if (Libedit_FOUND)
   add_definitions(${Libedit_DEFINITIONS} -DPIC_READLINE_FOUND=1)
+  add_definitions(${Libedit_DEFINITIONS} -DPIC_READLINE_INCLUDE_DIR_SUFFIX=${Libedit_INCLUDE_DIR_SUFFIX})
   include_directories(${Libedit_INCLUDE_DIR})
 
   file(GLOB PICRIN_READLINE_SOURCES ${PROJECT_SOURCE_DIR}/contrib/10.readline/src/*.c)
diff --git a/contrib/10.readline/cmake/FindLibedit.cmake b/contrib/10.readline/cmake/FindLibedit.cmake
index 452d5a4d..32de3aa7 100644
--- a/contrib/10.readline/cmake/FindLibedit.cmake
+++ b/contrib/10.readline/cmake/FindLibedit.cmake
@@ -30,7 +30,7 @@ else (Libedit_LIBRARIES AND Libedit_INCLUDE_DIRS)
       pkg_check_modules(_LIBEDIT libedit)
     endif (PKG_CONFIG_FOUND)
   endif (${CMAKE_MAJOR_VERSION} EQUAL 2 AND ${CMAKE_MINOR_VERSION} EQUAL 4)
-  find_path(Libedit_INCLUDE_DIR
+  find_path(Libedit_EDITLINE_INCLUDE_DIR
     NAMES
       readline.h
       history.h
@@ -43,7 +43,29 @@ else (Libedit_LIBRARIES AND Libedit_INCLUDE_DIRS)
     PATH_SUFFIXES
       editline
   )
-  
+  if (Libedit_EDITLINE_INCLUDE_DIR)
+    set(Libedit_INCLUDE_DIR_SUFFIX editline)
+    set(Libedit_INCLUDE_DIR Libedit_EDITLINE_INCLUDE_DIR)
+  else (Libedit_EDITLINE_INCLUDE_DIR)
+    find_path(Libedit_READLINE_INCLUDE_DIR
+      NAMES
+        readline.h
+        history.h
+      PATHS
+        ${_Libedit_INCLUDEDIR}/edit
+        /usr/include/edit
+        /usr/local/include/edit
+        /opt/local/include/edit
+        /sw/include/edit
+      PATH_SUFFIXES
+        readline
+        )
+    if (Libedit_READLINE_INCLUDE_DIR)
+      set(Libedit_INCLUDE_DIR_SUFFIX readline)
+      set(Libedit_INCLUDE_DIR Libedit_READLINE_INCLUDE_DIR)
+    endif (Libedit_READLINE_INCLUDE_DIR)
+  endif (Libedit_EDITLINE_INCLUDE_DIR)
+
   find_library(Libedit_LIBRARY
     NAMES
       edit
diff --git a/contrib/10.readline/src/readline.c b/contrib/10.readline/src/readline.c
index 9d9650ac..237a3a84 100644
--- a/contrib/10.readline/src/readline.c
+++ b/contrib/10.readline/src/readline.c
@@ -5,8 +5,13 @@
 /* This will include all our libedit functions.  If you use C++ don't
 forget to use the C++ extern "C" to get it to compile.
 */
+#if PIC_READLINE_INCLUDE_DIR_SUFFIX == readline
+#include <readline/readline.h>
+#include <readline/history.h>
+#else
 #include <editline/readline.h>
 #include <editline/history.h>
+#endif
 #include "picrin.h"
 #include "picrin/pair.h"
 #include "picrin/string.h"