1 files changed, 3 insertions, 0 deletions
diff --git a/numeric.c b/numeric.c
index 6301adecd6..7cecfeb02d 100644
--- a/numeric.c
+++ b/numeric.c
@@ -78,6 +78,9 @@ round(double x)
     }
     return x;
 }
+#elif defined(__BEOS__)
+/* appears to be a bug in the BeOS headers */
+double round(double x);
 #endif
 
 static ID id_coerce, id_to_i, id_eq;