diff --git a/.travis.yml b/.travis.yml
index b90fd42..edf25ee 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -11,6 +11,7 @@ matrix:
 
 before_install:
   - if [ "$TRAVIS_OS_NAME" == "osx" ]; then rvm install 2.1 && rvm use 2.1 && ruby -v; fi
+  - if [ "$TRAVIS_OS_NAME" == "linux" ]; then sudo apt-get install --assume-yes --quiet gcc-multilib; fi
 install: gem install rspec
 script:
   - cd test && rake ci
@@ -19,6 +20,6 @@ script:
   - cd ../extras/fixture/test && rake ci
   - make -s default noStdlibMalloc
   - make -s C89
-  - cd ../../../examples/example_1 && make -s
-  - cd ../example_2 && make -s
-  - cd ../example_3 && rake
\ No newline at end of file
+  - cd ../../../examples/example_1 && make -s ci
+  - cd ../example_2 && make -s ci
+  - cd ../example_3 && rake
diff --git a/examples/example_1/makefile b/examples/example_1/makefile
index c5a3ca4..cca79b4 100644
--- a/examples/example_1/makefile
+++ b/examples/example_1/makefile
@@ -67,3 +67,5 @@ test/test_runners/TestProductionCode2_Runner.c: test/TestProductionCode2.c
 clean:
 	$(CLEANUP) $(TARGET1) $(TARGET2)
 
+ci: CFLAGS += -Werror
+ci: default
diff --git a/examples/example_2/makefile b/examples/example_2/makefile
index cfde2cc..99d8d96 100644
--- a/examples/example_2/makefile
+++ b/examples/example_2/makefile
@@ -66,3 +66,5 @@ default:
 clean:
 	$(CLEANUP) $(TARGET1)
 
+ci: CFLAGS += -Werror
+ci: default