diff --git a/compat-libstdc++33-ldbl.patch b/compat-libstdc++33-ldbl.patch
index 6055c01..a3cd35d 100644
--- a/compat-libstdc++33-ldbl.patch
+++ b/compat-libstdc++33-ldbl.patch
@@ -1,6 +1,14 @@
 --- libstdc++33-v3/libmath/stubs.c.jj	2003-06-03 08:48:02.000000000 -0400
-+++ libstdc++33-v3/libmath/stubs.c	2006-08-21 07:25:18.000000000 -0400
-@@ -30,10 +30,25 @@
++++ libstdc++33-v3/libmath/stubs.c	2006-08-21 09:18:10.000000000 -0400
+@@ -27,13 +27,33 @@
+    invalidate any other reasons why the executable file might be covered by
+    the GNU General Public License.  */
+ 
++#if defined __s390__ || defined __powerpc__
++/* Lie.  */
++#define __LONG_DOUBLE_128__ 1
++#endif
++
  #include <math.h>
  #include "config.h"
  
@@ -9,7 +17,6 @@
 +#undef HAVE_COSHL
 +#undef HAVE_COSL
 +#undef HAVE_EXPL
-+#undef HAVE_HYPOTL
 +#undef HAVE_LOG10L
 +#undef HAVE_LOGL
 +#undef HAVE_POWL
@@ -23,7 +30,20 @@
  /* For targets which do not have support for long double versions,
     we use the crude approximation.  We'll do better later.  */
  
--
+ 
  #ifndef HAVE_ATAN2F
  float
  atan2f(float x, float y)
+@@ -137,6 +156,12 @@ hypotl(long double x, long double y)
+   x /= s; y /= s;
+   return s * sqrtl(x * x + y * y);
+ }
++#elif (defined __s390__ || defined __powerpc__) && defined HAVE_HYPOT
++long double
++hypotl(long double x, long double y)
++{
++  return hypot((double) x, (double) y);
++}
+ #endif
+ 
+