diff --git a/eo/src/other/eoExternalEO.h b/eo/src/other/eoExternalEO.h
index 4440b428f..cb37206b8 100644
--- a/eo/src/other/eoExternalEO.h
+++ b/eo/src/other/eoExternalEO.h
@@ -26,7 +26,7 @@
 #ifndef eoExternalEO_h
 #define eoExternalEO_h
 
-#include <EO.h> // EO
+#include "../EO.h" // EO
 
 /**
  * Definition of an object that allows an external struct
diff --git a/eo/src/other/eoExternalOpFunctions.h b/eo/src/other/eoExternalOpFunctions.h
index d86b49c45..75455f079 100644
--- a/eo/src/other/eoExternalOpFunctions.h
+++ b/eo/src/other/eoExternalOpFunctions.h
@@ -28,10 +28,10 @@
 #ifndef eoExternalOpFunc_h
 #define eoExternalOpFunc_h
 
-#include <other/eoExternalEO.h>
-#include <eoOp.h>
-#include <eoInit.h>
-#include <eoEvalFunc.h>
+#include "eoExternalEO.h"
+#include "../eoOp.h"
+#include "../eoInit.h"
+#include "../eoEvalFunc.h"
 
 /**
     Initialization of external struct, ctor expects a function of the following
diff --git a/eo/src/other/eoString.h b/eo/src/other/eoString.h
index 3071d1ee6..2fff076ee 100644
--- a/eo/src/other/eoString.h
+++ b/eo/src/other/eoString.h
@@ -30,8 +30,7 @@
 #include <string>
 #include <stdexcept>
 
-
-#include <EO.h>
+#include "../EO.h"
 
 //-----------------------------------------------------------------------------
 // eoString
diff --git a/eo/src/other/external_eo b/eo/src/other/external_eo
index aeaaaab6b..449053a05 100644
--- a/eo/src/other/external_eo
+++ b/eo/src/other/external_eo
@@ -1,2 +1,2 @@
-#include <other/eoExternalEO.h>
-#include <other/eoExternalOpFunctions.h>
+#include "eoExternalEO.h"
+#include "eoExternalOpFunctions.h"