diff --git a/libs/libzrtp/configure.in b/libs/libzrtp/configure.in
index ebd1609b42..7038210c66 100644
--- a/libs/libzrtp/configure.in
+++ b/libs/libzrtp/configure.in
@@ -89,8 +89,8 @@ if test -z "$DOXYGEN";
    then AC_MSG_WARN([Doxygen not found - continuing without Doxygen support])
 fi
 
-AM_CONDITIONAL([HAVE_DOXYGEN], 
-[test -n "$DOXYGEN"])AM_COND_IF([HAVE_DOXYGEN], [AC_CONFIG_FILES([doc/Doxyfile])])
+AM_CONDITIONAL([HAVE_DOXYGEN], [test -n "$DOXYGEN"])
+AM_COND_IF([HAVE_DOXYGEN], [AC_CONFIG_FILES([doc/Doxyfile])])
 
 #
 # Generate Makefiles