diff --git a/dcapi/boinc/dc_boinc.h b/dcapi/boinc/dc_boinc.h
index 5ae8f5c47b..ac0d68aaa5 100644
--- a/dcapi/boinc/dc_boinc.h
+++ b/dcapi/boinc/dc_boinc.h
@@ -24,10 +24,6 @@ extern "C" {
  * Constants
  */
 
-/* Master's working directory (absolute path) */
-#define CFG_WORKDIR		"WorkingDirectory"
-/* Application instance UUID */
-#define CFG_INSTANCEUUID	"InstanceUUID"
 /* Location of config.xml */
 #define CFG_CONFIGXML		"BoincConfigXML"
 /* The root direcory of the BOINC project */
diff --git a/dcapi/condor/condor_defs.h b/dcapi/condor/condor_defs.h
index 70a3c724a3..72650b6b40 100644
--- a/dcapi/condor/condor_defs.h
+++ b/dcapi/condor/condor_defs.h
@@ -49,8 +49,6 @@ typedef enum
 	FILE_DCAPI
 } WorkdirFile;
 
-#define CFG_WORKDIR	"WorkingDirectory"
-
 
 #ifdef __cplusplus
 }
diff --git a/dcapi/include/dc_internal.h b/dcapi/include/dc_internal.h
index e5d19b77e9..91e27a0f9e 100644
--- a/dcapi/include/dc_internal.h
+++ b/dcapi/include/dc_internal.h
@@ -9,7 +9,7 @@
  * Copyright MTA SZTAKI, 2006
  */
 
-/* <Tell gtk-doc that this is a private_header> */
+/* <private_header> */
 
 #ifndef __DC_INTERNAL_H_
 #define __DC_INTERNAL_H_
@@ -18,6 +18,20 @@
 extern "C" {
 #endif
 
+/********************************************************************
+ * Constants
+ */
+
+/* Master's working directory (absolute path) */
+#define CFG_WORKDIR		"WorkingDirectory"
+/* Application instance UUID */
+#define CFG_INSTANCEUUID	"InstanceUUID"
+/* Log level */
+#define CFG_LOGLEVEL		"LogLevel"
+/* Log file location */
+#define CFG_LOGFILE		"LogFile"
+
+
 /********************************************************************
  * Function prototypes
  */
diff --git a/dcapi/local/dc_local.h b/dcapi/local/dc_local.h
index b29d5227d4..40f0f011f7 100644
--- a/dcapi/local/dc_local.h
+++ b/dcapi/local/dc_local.h
@@ -17,11 +17,9 @@ extern "C" {
  */
 
 /* DCAPI configuration keys */
-#define CFG_WORKDIR		"WorkingDirectory"
 #define CFG_SLEEPINTERVAL	"SleepingInterval"
-#define CFG_INSTANCEUUID        "InstanceUUID"
 
-#define DEFAULT_SLEEP_INTERVAL		5
+#define DEFAULT_SLEEP_INTERVAL	5
 
 /* File types in the working directory */
 typedef enum