diff --git a/man3/assert.3 b/man3/assert.3
index 728cc08b7..1fd6287e0 100644
--- a/man3/assert.3
+++ b/man3/assert.3
@@ -41,7 +41,7 @@ was last included, the macro
 generates no code, and hence does nothing at all.
 Otherwise, the macro
 .B assert()
-prints an error message to standard output and terminates the program
+prints an error message to standard error and terminates the program
 by calling
 .B abort()
 if