diff --git a/Makefile b/Makefile
index c8fa399f..13be7e9a 100644
--- a/Makefile
+++ b/Makefile
@@ -45,7 +45,7 @@ build/exercises.zip: $(EXERCISES)
 ##############################################################################
 # Check that the examples all run correctly 
 
-CN_PATH ?= cn 
+CN_PATH ?= "cn verify" 
 
 check-archive: 
 	@echo Check archive examples
diff --git a/check.sh b/check.sh
index 50e82a5e..2eb54c26 100755
--- a/check.sh
+++ b/check.sh
@@ -7,7 +7,7 @@ then
     echo "using CN=$1 in $PWD"
     CN="$1"
 else
-    CN=cn
+    CN="cn verify"
 fi
 
 good=0
diff --git a/src/example-archive/check-all.sh b/src/example-archive/check-all.sh
index 8c87ccdd..5213e562 100755
--- a/src/example-archive/check-all.sh
+++ b/src/example-archive/check-all.sh
@@ -7,7 +7,7 @@ then
   echo "check-all.sh: using CN=$1 in $PWD"
   CN="$1"
 else
-  CN=cn
+  CN="cn verify"
 fi
 
 subdirs=(
diff --git a/src/example-archive/check.sh b/src/example-archive/check.sh
index 2878ab60..80d2b49b 100755
--- a/src/example-archive/check.sh
+++ b/src/example-archive/check.sh
@@ -5,7 +5,7 @@ then
   echo "check.sh: using CN=$1 in $PWD"
   CN="$1"
 else
-  CN=cn
+  CN="cn verify"
 fi
 
 process_files() {