diff --git a/config/default_rules.yaml b/config/default_rules.yaml
index 66d2741..703f135 100644
--- a/config/default_rules.yaml
+++ b/config/default_rules.yaml
@@ -86,7 +86,8 @@
             - "#from"
         - 
           label: "no_tag"
-          regex: /^[:]/
+          regex: /:/
+          inverse_rule: true
           level: "error"
           message: "No tag is used"
           description: "lorem ipsum tar"
diff --git a/sample_rules/basic_rules.yaml b/sample_rules/basic_rules.yaml
index 4690472..59aede6 100644
--- a/sample_rules/basic_rules.yaml
+++ b/sample_rules/basic_rules.yaml
@@ -86,7 +86,8 @@
             - "#from"
         - 
           label: "no_tag"
-          regex: /^[:]/
+          regex: /:/
+          inverse_rule: true
           level: "error"
           message: "No tag is used"
           description: "No tag is used. It is recommended that a specific tag is used in the FROM line or *-released which is the latest supported release."
diff --git a/sample_rules/basic_rules_atomic.yaml b/sample_rules/basic_rules_atomic.yaml
index 41dca23..63597d7 100644
--- a/sample_rules/basic_rules_atomic.yaml
+++ b/sample_rules/basic_rules_atomic.yaml
@@ -86,7 +86,8 @@
             - "#from"
         - 
           label: "no_tag"
-          regex: /^[:]/
+          regex: /:/
+          inverse_rule: true
           level: "error"
           message: "No tag is used"
           description: "lorem ipsum tar"
diff --git a/sample_rules/default_rules.yaml b/sample_rules/default_rules.yaml
index b45d653..6ad2b6c 100644
--- a/sample_rules/default_rules.yaml
+++ b/sample_rules/default_rules.yaml
@@ -86,7 +86,8 @@
             - "#from"
         - 
           label: "no_tag"
-          regex: /^[:]/
+          regex: /:/
+          inverse_rule: true
           level: "error"
           message: "No tag is used"
           description: "lorem ipsum tar"
diff --git a/sample_rules/openshift.yaml b/sample_rules/openshift.yaml
index 826b3e7..2592784 100644
--- a/sample_rules/openshift.yaml
+++ b/sample_rules/openshift.yaml
@@ -86,7 +86,8 @@
             - "#from"
         - 
           label: "no_tag"
-          regex: /^[:]/
+          regex: /:/
+          inverse_rule: true
           level: "error"
           message: "No tag is used"
           description: "lorem ipsum tar"
diff --git a/sample_rules/osbs.yaml b/sample_rules/osbs.yaml
index a0f5c06..8f29730 100644
--- a/sample_rules/osbs.yaml
+++ b/sample_rules/osbs.yaml
@@ -85,7 +85,8 @@
             - "#from"
         - 
           label: "no_tag"
-          regex: /^[:]/
+          regex: /:/
+          inverse_rule: true
           level: "warn"
           message: "No tag is used"
           description: "lorem ipsum tar"
diff --git a/test/data/dockerfiles/TestLabels b/test/data/dockerfiles/TestLabels
index 0f49be4..ba15aa5 100644
--- a/test/data/dockerfiles/TestLabels
+++ b/test/data/dockerfiles/TestLabels
@@ -5,7 +5,7 @@
 #
 
 # Pull base image.
-FROM dockerfile/ubuntu
+FROM ubuntu:14.04
 
 # Install Nginx.