diff --git a/tool/Makefile.am b/tool/Makefile.am
index 27bce15c..a4656a87 100644
--- a/tool/Makefile.am
+++ b/tool/Makefile.am
@@ -28,7 +28,6 @@ EXTRA_DIST =
 bin_PROGRAMS = ethercat
 
 ethercat_SOURCES = \
-	../master/soe_errors.c \
 	Command.cpp \
 	CommandAlias.cpp \
 	CommandCrc.cpp \
diff --git a/tool/SoeCommand.cpp b/tool/SoeCommand.cpp
index 67cb0792..278dba7c 100644
--- a/tool/SoeCommand.cpp
+++ b/tool/SoeCommand.cpp
@@ -23,8 +23,7 @@
 using namespace std;
 
 #include "SoeCommand.h"
-
-extern const ec_code_msg_t soe_error_codes[];
+#include "../master/soe_errors.c"
 
 /****************************************************************************/