1 files changed, 3 insertions, 3 deletions
diff --git a/src/fig/FIG0_18.h b/src/fig/FIG0_18.h
index da0e748..609af8c 100644
--- a/src/fig/FIG0_18.h
+++ b/src/fig/FIG0_18.h
@@ -36,10 +36,10 @@ class FIG0_18 : public IFIG
     public:
         FIG0_18(FIGRuntimeInformation* rti);
         virtual FillStatus fill(uint8_t *buf, size_t max_size);
-        virtual FIG_rate repetition_rate(void) { return FIG_rate::B; }
+        virtual FIG_rate repetition_rate() const { return FIG_rate::B; }
 
-        virtual const int figtype(void) const { return 0; }
-        virtual const int figextension(void) const { return 18; }
+        virtual int figtype() const { return 0; }
+        virtual int figextension() const { return 18; }
 
     private:
         FIGRuntimeInformation *m_rti;