diff --git a/src/common/CriticalSignatures.h b/src/common/CriticalSignatures.h
index 49f3153..360354c 100644
--- a/src/common/CriticalSignatures.h
+++ b/src/common/CriticalSignatures.h
@@ -13,6 +13,8 @@
 #ifndef _COMMON_CRITICALSIGNATURES_H_
 #define _COMMON_CRITICALSIGNATURES_H_
 
+#include <string>
+
 namespace tasksan {
 
 /**
diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index 3356187..fb27989 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -29,6 +29,8 @@ link_libraries(${GTEST_LIBRARIES} pthread gtest_main gcov --coverage)
 # Link commonTests with what we want to test and
 # the GTest and pthread library
 add_executable(commonTests Common_Defs_gtest.cc)
+add_executable(critalSigTests CriticalSignatures_gtest.cc)
 
 # Add tests for Ctest
 add_test(common_tests, commonTests)
+add_test(critica_signatures_tests, critalSigTests)
diff --git a/test/CriticalSignatures_gtest.cc b/test/CriticalSignatures_gtest.cc
new file mode 100644
index 0000000..3a16804
--- /dev/null
+++ b/test/CriticalSignatures_gtest.cc
@@ -0,0 +1,11 @@
+#include "common/CriticalSignatures.h"
+#include <gtest/gtest.h>
+
+//! \brief Unit tests for TaskSanitizer helper functions
+TEST(CriticalSignature, CheckReturnOfGetStartCriticalSignature) {
+  EXPECT_EQ("TASKSAN:BeginCriticalSection", tasksan::getStartCriticalSignature());
+}
+
+TEST(CriticalSignature, CheckReturnOfGetEndCriticalSignature) {
+  EXPECT_EQ("TASKSAN:EndCriticalSection", tasksan::getEndCriticalSignature());
+}