diff --git a/ChangeLog b/ChangeLog
index 309b13cab8..9685fde488 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2016-12-31  Florian Weimer  <fweimer@redhat.com>
+
+	[BZ #17252]
+	* posix/unistd.h (getentropy): Declare for __USE_MISC, not just
+	__USE_GNU.
+
 2016-12-31  Torvald Riegel  <triegel@redhat.com>
 
 	[BZ #13165]
diff --git a/posix/unistd.h b/posix/unistd.h
index 70b10c6a88..a8c9aa9245 100644
--- a/posix/unistd.h
+++ b/posix/unistd.h
@@ -1157,7 +1157,7 @@ extern int pthread_atfork (void (*__prepare) (void),
 			   void (*__child) (void)) __THROW;
 #endif
 
-#ifdef __USE_GNU
+#ifdef __USE_MISC
 /* Write LENGTH bytes of randomness starting at BUFFER.  Return 0 on
    success or -1 on error.  */
 int getentropy (void *__buffer, size_t __length) __wur;