diff --git a/Utest/testGetBasename.cpp b/Utest/testGetBasename.cpp
index 990a4d485130f90538ddb85dd46b7b41e0516cb7..9e099e20eea7b2bc37162654c460ffcaebc95f3f 100644
--- a/Utest/testGetBasename.cpp
+++ b/Utest/testGetBasename.cpp
@@ -1,7 +1,7 @@
 #include<cstdlib>
 #include "../Analysis.h"
 
-OutputHandler* Log;
+extern OutputHandler* Log;
 
 int testGetBasename()
 {
diff --git a/Utest/testGetFilename.cpp b/Utest/testGetFilename.cpp
index 36a34565b40ecc80711c4b9f5bb371686c586b84..2aa0d99f0b723247205ded7e482e3836ae3ddaa7 100644
--- a/Utest/testGetFilename.cpp
+++ b/Utest/testGetFilename.cpp
@@ -1,7 +1,7 @@
 #include<cstdlib>
 #include "../Analysis.h"
 
-OutputHandler* Log;
+extern OutputHandler* Log;
 
 int testGetFilename()
 {