diff --git a/CMakeLists.txt b/CMakeLists.txt
index c18b5525..72f26f9a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -35,6 +35,13 @@ if(NOT RUBY_EXECUTABLE)
   message(FATAL_ERROR "Ruby not found.")
 endif()
 
+#
+# crypt.h or xcrypt.h ?
+#
+INCLUDE(CheckIncludeFiles)
+CHECK_INCLUDE_FILES(xcrypt.h HAVE_XCRYPT_H)
+CONFIGURE_FILE(${CMAKE_CURRENT_SOURCE_DIR}/config.h.in ${CMAKE_CURRENT_BINARY_DIR}/config.h)
+
 #
 # -> src/
 #
diff --git a/config.h.in b/config.h.in
new file mode 100644
index 00000000..ce6b0619
--- /dev/null
+++ b/config.h.in
@@ -0,0 +1,4 @@
+// configuration file for yast2-ruby-bindings
+
+#cmakedefine HAVE_XCRYPT_H
+
diff --git a/src/binary/Builtin.cc b/src/binary/Builtin.cc
index 5a7fab70..25fa9783 100644
--- a/src/binary/Builtin.cc
+++ b/src/binary/Builtin.cc
@@ -6,13 +6,19 @@
 #define _OW_SOURCE
 #endif
 
+#include "config.h"
+
 #include <string>
 #include <sstream>
 #include <stdexcept>
 #include <iconv.h>
 #include <errno.h>
 extern "C" {
-  #include <crypt.h>
+  #ifdef HAVE_XCRYPT_H
+    #include <xcrypt.h>
+  #else
+    #include <crypt.h>
+  #endif
 }
 #include <stdio.h>
 #include <unistd.h>