diff --git a/ng2-components/ng2-activiti-processlist/karma.conf.js b/ng2-components/ng2-activiti-processlist/karma.conf.js
index 1a8eb4d737..502768ef2e 100644
--- a/ng2-components/ng2-activiti-processlist/karma.conf.js
+++ b/ng2-components/ng2-activiti-processlist/karma.conf.js
@@ -109,7 +109,7 @@ module.exports = function (config) {
     // Source files that you wanna generate coverage for.
     // Do not include tests or libraries (these files will be instrumented by Istanbul)
     preprocessors: {
-      'src/**/!(*spec|index|*mock|*model|mdl*).js': 'coverage'
+      'src/**/!(*spec|index|*mock|*model|*event|mdl*).js': 'coverage'
     },
 
     coverageReporter: {
diff --git a/ng2-components/ng2-activiti-tasklist/karma.conf.js b/ng2-components/ng2-activiti-tasklist/karma.conf.js
index 9df3fdd167..059a42b347 100644
--- a/ng2-components/ng2-activiti-tasklist/karma.conf.js
+++ b/ng2-components/ng2-activiti-tasklist/karma.conf.js
@@ -105,7 +105,7 @@ module.exports = function (config) {
     // Source files that you wanna generate coverage for.
     // Do not include tests or libraries (these files will be instrumented by Istanbul)
     preprocessors: {
-      'src/**/!(*spec|index|*mock|*model|mdl*).js': 'coverage'
+      'src/**/!(*spec|index|*mock|*model|*event|mdl*).js': 'coverage'
     },
 
     coverageReporter: {
diff --git a/ng2-components/ng2-alfresco-core/karma.conf.js b/ng2-components/ng2-alfresco-core/karma.conf.js
index 3ec5585f66..9f8bde0261 100644
--- a/ng2-components/ng2-alfresco-core/karma.conf.js
+++ b/ng2-components/ng2-alfresco-core/karma.conf.js
@@ -94,7 +94,7 @@ module.exports = function (config) {
     // Source files that you wanna generate coverage for.
     // Do not include tests or libraries (these files will be instrumented by Istanbul)
     preprocessors: {
-      'src/**/!(*spec|index|*mock|*model|mdl*).js': 'coverage'
+      'src/**/!(*spec|index|*mock|*model|*event|mdl*).js': 'coverage'
     },
 
     coverageReporter: {