diff --git a/.travis.yml b/.travis.yml
index 39ad8bf3..352ea59d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -24,7 +24,7 @@ services:
       echo "This is a new branch"
     elif ! git diff --name-only "$TRAVIS_COMMIT_RANGE" -- &> /dev/null; then
       echo "Change range not recognized: '$TRAVIS_COMMIT_RANGE'"
-    elif git diff --name-only "$TRAVIS_COMMIT_RANGE" -- | grep -Eq "^$Dockerfile"; then
+    elif git diff --name-only "$TRAVIS_COMMIT_RANGE" -- | grep -Eq "^$Dockerfile$"; then
       echo "Change of $Dockerfile detected."
     else
       echo "Skip build of $Dockerfile as it's not changed."
diff --git a/travis.yml.template b/travis.yml.template
index 475c10ad..657c39ce 100644
--- a/travis.yml.template
+++ b/travis.yml.template
@@ -22,7 +22,7 @@ services:
       echo "This is a new branch"
     elif ! git diff --name-only "$TRAVIS_COMMIT_RANGE" -- &> /dev/null; then
       echo "Change range not recognized: '$TRAVIS_COMMIT_RANGE'"
-    elif git diff --name-only "$TRAVIS_COMMIT_RANGE" -- | grep -Eq "^$Dockerfile"; then
+    elif git diff --name-only "$TRAVIS_COMMIT_RANGE" -- | grep -Eq "^$Dockerfile$"; then
       echo "Change of $Dockerfile detected."
     else
       echo "Skip build of $Dockerfile as it's not changed."