1 files changed, 2 insertions, 2 deletions

diff --git a/src/sysdep.c b/src/sysdep.c
index f73562efd5a..c971cb32242 100644
--- a/src/sysdep.c
+++ b/src/sysdep.c
@@ -4995,7 +4995,7 @@ bzero (b, length)
 #endif /* no bzero */
 #endif /* BSTRING */
 
-#if (defined (BSTRING) && !defined (bcopy)) || defined (NEED_BCOPY)
+#if (!defined (BSTRING) && !defined (bcopy)) || defined (NEED_BCOPY)
 #undef bcopy
 
 /* Saying `void' requires a declaration, above, where bcopy is used
@@ -5023,7 +5023,7 @@ bcopy (b1, b2, length)
 }
 #endif /* (defined (BSTRING) && !defined (bcopy)) || defined (NEED_BCOPY) */
 
-#ifdef BSTRING
+#ifndef BSTRING
 #ifndef bcmp
 int
 bcmp (b1, b2, length)   /* This could be a macro! */