diff --git a/src/gui/curses/CMakeLists.txt b/src/gui/curses/CMakeLists.txt
index 7f50595..099bec5 100644
--- a/src/gui/curses/CMakeLists.txt
+++ b/src/gui/curses/CMakeLists.txt
@@ -57,6 +57,10 @@ IF(${CMAKE_SYSTEM_NAME} STREQUAL "FreeBSD")
   ENDIF(HAVE_BACKTRACE)
 ENDIF(${CMAKE_SYSTEM_NAME} STREQUAL "FreeBSD")
 
+IF(${CMAKE_SYSTEM_NAME} STREQUAL "OpenBSD")
+  LIST(APPEND EXTRA_LIBS "pthread")
+ENDIF(${CMAKE_SYSTEM_NAME} STREQUAL "OpenBSD")
+
 IF(ICONV_LIBRARY)
   LIST(APPEND EXTRA_LIBS ${ICONV_LIBRARY})
 ENDIF(ICONV_LIBRARY)