diff --git a/config-generic b/config-generic
index db17cdd4e..0f339eb2d 100644
--- a/config-generic
+++ b/config-generic
@@ -2518,7 +2518,7 @@ CONFIG_SERIAL_8250=y
 CONFIG_SERIAL_8250_CONSOLE=y
 CONFIG_SERIAL_8250_CS=m
 CONFIG_SERIAL_8250_NR_UARTS=32
-CONFIG_SERIAL_8250_RUNTIME_UARTS=4
+CONFIG_SERIAL_8250_RUNTIME_UARTS=32
 CONFIG_SERIAL_8250_EXTENDED=y
 CONFIG_SERIAL_8250_MANY_PORTS=y
 CONFIG_SERIAL_8250_SHARE_IRQ=y
diff --git a/kernel.spec b/kernel.spec
index 4a9f36512..b1d0769f1 100644
--- a/kernel.spec
+++ b/kernel.spec
@@ -2039,6 +2039,7 @@ fi
 # 
 %changelog
 * Wed Oct 07 2015 Josh Boyer <jwboyer@fedoraproject.org>
+- Increase the default number of runtime UARTS (rhbz 1264383)
 - Enable X86_NUMACHIP
 
 * Tue Oct 06 2015 Laura Abbott <labbott@redhat.com> - 4.3.0-0.rc4.git1.1