diff --git a/ext/ncurses/config.m4 b/ext/ncurses/config.m4
index 1bcab68f373..afdf58830ba 100644
--- a/ext/ncurses/config.m4
+++ b/ext/ncurses/config.m4
@@ -56,7 +56,7 @@ if test "$PHP_NCURSES" != "no"; then
  
    AC_CHECK_LIB($LIBNAME, color_set,   [AC_DEFINE(HAVE_NCURSES_COLOR_SET,  1, [ ])])
    AC_CHECK_LIB($LIBNAME, slk_color,   [AC_DEFINE(HAVE_NCURSES_SLK_COLOR,  1, [ ])])
-   AC_CHECK_LIB($LIBNAME, asume_default_colors,   [AC_DEFINE(HAVE_NCURSES_ASSUME_DEFAULT_COLORS,  1, [ ])])
+   AC_CHECK_LIB($LIBNAME, assume_default_colors,   [AC_DEFINE(HAVE_NCURSES_ASSUME_DEFAULT_COLORS,  1, [ ])])
    AC_CHECK_LIB($LIBNAME, use_extended_names,   [AC_DEFINE(HAVE_NCURSES_USE_EXTENDED_NAMES,  1, [ ])])
 
    PHP_NEW_EXTENSION(ncurses, ncurses.c ncurses_fe.c ncurses_functions.c, $ext_shared, cli)