diff --git a/ChangeLog b/ChangeLog
index 44e37de..1b496c7 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2017-11-01  Ben Elliston  <bje@gnu.org>
+
+	* config.guess (romp-ibm:4.4BSD:*): Correct pattern so that it
+	does not match romp-ibm:BSD:* in the immediately following case.
+
 2017-11-01  Ben Elliston  <bje@gnu.org>
 
 	* config.guess (mips:*:*:UMIPS | mips:*:*:RISCos): Use explicit
diff --git a/config.guess b/config.guess
index e0d249c..a036ba7 100755
--- a/config.guess
+++ b/config.guess
@@ -608,7 +608,7 @@ EOF
     *:AIX:*:*)
 	echo rs6000-ibm-aix
 	exit ;;
-    ibmrt:4.4BSD:*|romp-ibm:BSD:*)
+    ibmrt:4.4BSD:*|romp-ibm:4.4BSD:*)
 	echo romp-ibm-bsd4.4
 	exit ;;
     ibmrt:*BSD:*|romp-ibm:BSD:*)            # covers RT/PC BSD and