diff --git a/pia.c b/pia.c
index 9acacfb..5924db1 100644
--- a/pia.c
+++ b/pia.c
@@ -51,8 +51,8 @@ void pia_init(struct pia_t *pia) {
    pia->crb = 0;
 }
 
-void pia_trace(struct pia_t *pia, uint8_t trace) {
-   pia->trace = trace;
+void pia_trace(struct pia_t *pia, uint8_t enable) {
+   pia->trace = enable;
 }
 
 uint8_t pia_read(struct cpu_t *cpu, struct mem_t *mem, uint16_t addr) {
diff --git a/pia.h b/pia.h
index 5cdf6d6..1c718be 100644
--- a/pia.h
+++ b/pia.h
@@ -48,7 +48,7 @@ struct pia_t {
 };
 
 void pia_init(struct pia_t *pia);
-void pia_trace(struct pia_t *pia, uint8_t trace);
+void pia_trace(struct pia_t *pia, uint8_t enable);
 uint8_t pia_read(struct cpu_t *cpu, struct mem_t *mem, uint16_t addr);
 void pia_write(struct cpu_t *cpu, struct mem_t *mem, uint16_t addr, uint8_t b);