diff --git a/man3/pthread_mutexattr_setrobust.3 b/man3/pthread_mutexattr_setrobust.3
index dbf429c48..86aab88ed 100644
--- a/man3/pthread_mutexattr_setrobust.3
+++ b/man3/pthread_mutexattr_setrobust.3
@@ -33,7 +33,7 @@ pthread_mutexattr_getrobust, pthread_mutexattr_setrobust
 .PP
 .BI "int pthread_mutexattr_getrobust(const pthread_mutexattr_t *" attr ,
 .BI "                                int *" robustness ");"
-.BI "int pthread_mutexattr_setrobust(const pthread_mutexattr_t *" attr ,
+.BI "int pthread_mutexattr_setrobust(pthread_mutexattr_t *" attr ,
 .BI "                                int " robustness ");"
 .fi
 .PP