diff --git a/main/fuelcen.c b/main/fuelcen.c
index 6a68416bd..c5e29f685 100644
--- a/main/fuelcen.c
+++ b/main/fuelcen.c
@@ -799,7 +799,7 @@ void fuelcen_check_for_hoard_goal(segment *segp)
  */
 void old_matcen_info_read(old_matcen_info *mi, PHYSFS_file *fp)
 {
-	mi->robot_flags = PHYSFSX_readInt(fp);
+	mi->robot_flags[0] = PHYSFSX_readInt(fp);
 	mi->hit_points = PHYSFSX_readFix(fp);
 	mi->interval = PHYSFSX_readFix(fp);
 	mi->segnum = PHYSFSX_readShort(fp);
diff --git a/main/fuelcen.h b/main/fuelcen.h
index a49dce3e9..6cc6314e6 100644
--- a/main/fuelcen.h
+++ b/main/fuelcen.h
@@ -115,7 +115,7 @@ typedef struct FuelCenter {
 extern int Num_robot_centers;
 
 typedef struct  {
-	int     robot_flags;    // Up to 32 different robots
+	int     robot_flags[1];    // Up to 32 different robots
 	fix     hit_points;     // How hard it is to destroy this particular matcen
 	fix     interval;       // Interval between materialogrifizations
 	short   segnum;         // Segment this is attached to.
diff --git a/main/gamesave.c b/main/gamesave.c
index f6d967dba..07aef7af7 100644
--- a/main/gamesave.c
+++ b/main/gamesave.c
@@ -977,7 +977,7 @@ int load_game_data(PHYSFS_file *LoadFile)
 		if (game_top_fileinfo_version < 27) {
 			old_matcen_info m;
 			old_matcen_info_read(&m, LoadFile);
-			RobotCenters[i].robot_flags[0] = m.robot_flags;
+			RobotCenters[i].robot_flags[0] = m.robot_flags[0];
 			RobotCenters[i].robot_flags[1] = 0;
 			RobotCenters[i].hit_points = m.hit_points;
 			RobotCenters[i].interval = m.interval;