diff --git a/src/maths/misc/isinf.c b/src/maths/misc/isinf.c
index 941ca19d9..637c31546 100644
--- a/src/maths/misc/isinf.c
+++ b/src/maths/misc/isinf.c
@@ -28,6 +28,6 @@ isinf (const double x)
 
 #endif /* HAVE_FINITE */
 #else /* HAVE_ISINF */
-int Dummy_Symbol_5;
+int Dummy_Symbol_7;
 #endif /* HAVE_ISINF */
 #endif /* HAVE_DECL_ISINF */
diff --git a/src/misc/dup2.c b/src/misc/dup2.c
index ae93b887d..a8db3549d 100644
--- a/src/misc/dup2.c
+++ b/src/misc/dup2.c
@@ -16,5 +16,5 @@ dup2(int oldd, int newd)
 	return 0;
 }
 #else
-int Dummy_Symbol_2;
+int Dummy_Symbol_6;
 #endif