Cosmetics.

diff --git a/configure.in b/configure.in
index a6e0198..14b465f4 100644
--- a/configure.in
+++ b/configure.in
@@ -20,7 +20,7 @@
 [if test "$enableval" = "no"; then DEBUG_MSGS="no"; fi])
 
 AC_ARG_ENABLE(opengl,
-[  --enable-opengl         force usage of OpenGL even if the latter is thread-safe],
+[  --enable-opengl         force usage of OpenGL even if the latter is thread-safe via pthread],
 [if test "$enableval" = "no"; then OPENGL="no"; elif test "$enableval" = "yes"; then OPENGL="yes"; fi])
 
 AC_ARG_ENABLE(trace,
@@ -1267,7 +1267,7 @@
   echo
   echo "*** Warning: the OpenGL version you have installed relies on libpthread for"
   echo "*** thread-safety. To prevent crashes, OpenGL support has been removed."
-  echo "*** A fix for glibc 2.1.3 that seem to work is included in this version of Wine,"
+  echo "*** A fix for glibc 2.1.3 that seems to work is included in this version of Wine,"
   echo "*** start configure with '--enable-opengl' to force OpenGL support."
 fi