diff --git a/configure.ac b/configure.ac
index bd81775..3a08f87 100644
--- a/configure.ac
+++ b/configure.ac
@@ -230,7 +230,7 @@ x ) enable_static=no ;;
 esac
 AC_ARG_ENABLE([shared],
     [AS_HELP_STRING([--disable-shared],
-        [build shared libraries @<:@default=enabled@:>@])],
+        [don't build shared libraries @<:@default=enabled@:>@])],
     [enable_shared="$enableval"],
     [enable_shared=yes]
 )
@@ -835,7 +835,7 @@ AC_SUBST([DRI_DRIVER_SEARCH_DIR])
 dnl Direct rendering or just indirect rendering
 AC_ARG_ENABLE([driglx-direct],
     [AS_HELP_STRING([--disable-driglx-direct],
-        [enable direct rendering in GLX and EGL for DRI @<:@default=enabled@:>@])],
+        [disable direct rendering in GLX and EGL for DRI @<:@default=enabled@:>@])],
     [driglx_direct="$enableval"],
     [driglx_direct="yes"])
 dnl Which drivers to build - default is chosen by platform
@@ -1106,7 +1106,7 @@ dnl GLU configuration
 dnl
 AC_ARG_ENABLE([glu],
     [AS_HELP_STRING([--disable-glu],
-        [enable OpenGL Utility library @<:@default=enabled@:>@])],
+        [disable OpenGL Utility library @<:@default=enabled@:>@])],
     [enable_glu="$enableval"],
     [enable_glu=yes])
 
@@ -1160,7 +1160,7 @@ dnl GLw configuration
 dnl
 AC_ARG_ENABLE([glw],
     [AS_HELP_STRING([--disable-glw],
-        [enable Xt/Motif widget library @<:@default=enabled@:>@])],
+        [disable Xt/Motif widget library @<:@default=enabled@:>@])],
     [enable_glw="$enableval"],
     [enable_glw=yes])
 dnl Don't build GLw on osmesa
@@ -1240,7 +1240,7 @@ else
 fi
 AC_ARG_ENABLE([glut],
     [AS_HELP_STRING([--disable-glut],
-        [enable GLUT library @<:@default=enabled if source available@:>@])],
+        [disable GLUT library @<:@default=enabled if source available@:>@])],
     [enable_glut="$enableval"],
     [enable_glut="$default_glut"])
 
@@ -1319,7 +1319,7 @@ dnl Gallium configuration
 dnl
 AC_ARG_ENABLE([gallium],
     [AS_HELP_STRING([--disable-gallium],
-        [build gallium @<:@default=enabled@:>@])],
+        [don't build gallium @<:@default=enabled@:>@])],
     [enable_gallium="$enableval"],
     [enable_gallium=yes])
 if test "x$enable_gallium" = xno -a "x$enable_openvg" = xyes; then