diff --git a/system/Makefile b/system/Makefile
index e8ca364..4397a85 100644
--- a/system/Makefile
+++ b/system/Makefile
@@ -36,7 +36,7 @@ VERILATOR_OPTS += --cc --exe
 VERILATOR_OPTS += --trace-fst --threads 1 --autoflush
 
 #linter options
-VERILATOR_OPTS += -Wall --Wno-DECLFILENAME -Wno-SYNCASYNCNET  -Wno-MULTIDRIVEN
+VERILATOR_OPTS += -Wall --Wno-DECLFILENAME
 
 #optimisation options
 VERILATOR_OPTS += -x-assign fast --x-initial fast
diff --git a/system/system.v b/system/system.v
index 320837d..5ae106d 100644
--- a/system/system.v
+++ b/system/system.v
@@ -117,7 +117,9 @@ end
 
 
 `ifdef CALCULATE_IPC
+/* verilator lint_off MULTIDRIVEN */
 reg [128:0] instruction_count;
+/* verilator lint_on MULTIDRIVEN */
 always @(new_instruction) begin
 	instruction_count<=instruction_count+1;
 end
@@ -139,7 +141,9 @@ end
 		finish<=2'd1;
 	end
 
+	/* verilator lint_off MULTIDRIVEN */
 	reg [1:0] finish;
+	/* verilator lint_on MULTIDRIVEN */
 
 	reg sane;
 	reg [128:0] cycles;
@@ -209,6 +213,7 @@ end
 			`endif
 		end
 	end
+
 `endif