diff --git a/debian/changelog b/debian/changelog
index 54fa256..578d73b 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,9 @@
+raspi-config (20200817) buster; urgency=medium
+
+  * Use processor ID to detect Pi 4 rather than board ID
+
+ -- Simon Long <simon@raspberrypi.com>  Mon, 17 Aug 2020 09:24:09 +0100
+
 raspi-config (20200727) buster; urgency=medium
 
   * Disable initial rfkill for all platforms when setting wireless country
diff --git a/raspi-config b/raspi-config
index 27c8cea..28606bc 100755
--- a/raspi-config
+++ b/raspi-config
@@ -46,7 +46,7 @@ is_pizero() {
 }
 
 is_pifour() {
-   grep -q "^Revision\s*:\s*[ 123][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F]11[0-9a-fA-F]$" /proc/cpuinfo
+   grep -q "^Revision\s*:\s*[ 123][0-9a-fA-F][0-9a-fA-F]3[0-9a-fA-F][0-9a-fA-F][0-9a-fA-F]$" /proc/cpuinfo
    return $?
 }