diff --git a/DateMeter.c b/DateMeter.c
index 6fd93373..e130159a 100644
--- a/DateMeter.c
+++ b/DateMeter.c
@@ -12,7 +12,7 @@ in the source distribution for its full text.
 #include <time.h>
 
 
-int DateMeter_attributes[] = {
+static const int DateMeter_attributes[] = {
    DATE
 };
 
diff --git a/DateMeter.h b/DateMeter.h
index 6cb899dd..44ed24da 100644
--- a/DateMeter.h
+++ b/DateMeter.h
@@ -9,8 +9,6 @@ in the source distribution for its full text.
 
 #include "Meter.h"
 
-extern int DateMeter_attributes[];
-
 extern MeterClass DateMeter_class;
 
 #endif
diff --git a/DateTimeMeter.c b/DateTimeMeter.c
index 5c60884a..32dd5d1a 100644
--- a/DateTimeMeter.c
+++ b/DateTimeMeter.c
@@ -12,7 +12,7 @@ in the source distribution for its full text.
 #include <time.h>
 
 
-int DateTimeMeter_attributes[] = {
+static const int DateTimeMeter_attributes[] = {
    DATETIME
 };
 
diff --git a/DateTimeMeter.h b/DateTimeMeter.h
index 6d1e3a68..ef25264c 100644
--- a/DateTimeMeter.h
+++ b/DateTimeMeter.h
@@ -9,8 +9,6 @@ in the source distribution for its full text.
 
 #include "Meter.h"
 
-extern int DateTimeMeter_attributes[];
-
 extern MeterClass DateTimeMeter_class;
 
 #endif