diff --git a/sys/src/cmd/1c/reg.c b/sys/src/cmd/1c/reg.c
index 26adbf222..7b0ca1984 100644
--- a/sys/src/cmd/1c/reg.c
+++ b/sys/src/cmd/1c/reg.c
@@ -359,9 +359,9 @@ loop2:
 			  ~(r->refahead.b[z] | r->calahead.b[z] | addrs.b[z]);
 		if(bany(&bit)) {
 			nearln = r->prog->lineno;
-			warn(Z, "assignment not used: %B", bit);
+			warn(Z, "set and not used: %B", bit);
 			if(debug['R'])
-				print("set an not used: %B\n", bit);
+				print("set and not used: %B\n", bit);
 			excise(r);
 		}
 		for(z=0; z<BITS; z++)
diff --git a/sys/src/cmd/2c/reg.c b/sys/src/cmd/2c/reg.c
index 0f724e404..81a2564bc 100644
--- a/sys/src/cmd/2c/reg.c
+++ b/sys/src/cmd/2c/reg.c
@@ -359,9 +359,9 @@ loop2:
 			  ~(r->refahead.b[z] | r->calahead.b[z] | addrs.b[z]);
 		if(bany(&bit)) {
 			nearln = r->prog->lineno;
-			warn(Z, "assignment not used: %B", bit);
+			warn(Z, "set and not used: %B", bit);
 			if(debug['R'])
-				print("assignment not used: %B\n", bit);
+				print("set and not used: %B\n", bit);
 			excise(r);
 		}
 		for(z=0; z<BITS; z++)
diff --git a/sys/src/cmd/5c/reg.c b/sys/src/cmd/5c/reg.c
index 0e9c6335c..a27b7148a 100644
--- a/sys/src/cmd/5c/reg.c
+++ b/sys/src/cmd/5c/reg.c
@@ -329,9 +329,9 @@ loop2:
 			  ~(r->refahead.b[z] | r->calahead.b[z] | addrs.b[z]);
 		if(bany(&bit)) {
 			nearln = r->prog->lineno;
-			warn(Z, "assignment not used: %B", bit);
+			warn(Z, "set and not used: %B", bit);
 			if(debug['R'])
-				print("assignment not used: %B\n", bit);
+				print("set and not used: %B\n", bit);
 			excise(r);
 		}
 		for(z=0; z<BITS; z++)
diff --git a/sys/src/cmd/6c/reg.c b/sys/src/cmd/6c/reg.c
index 2c44e2e21..82a32a1db 100644
--- a/sys/src/cmd/6c/reg.c
+++ b/sys/src/cmd/6c/reg.c
@@ -520,9 +520,9 @@ loop2:
 			  ~(r->refahead.b[z] | r->calahead.b[z] | addrs.b[z]);
 		if(bany(&bit)) {
 			nearln = r->prog->lineno;
-			warn(Z, "assignment not used: %B", bit);
+			warn(Z, "set and not used: %B", bit);
 			if(debug['R'])
-				print("assignment not used: %B\n", bit);
+				print("set and not used: %B\n", bit);
 			excise(r);
 		}
 		for(z=0; z<BITS; z++)
diff --git a/sys/src/cmd/7c/reg.c b/sys/src/cmd/7c/reg.c
index 50a688ecb..d992ba8f9 100644
--- a/sys/src/cmd/7c/reg.c
+++ b/sys/src/cmd/7c/reg.c
@@ -324,9 +324,9 @@ loop2:
 			  ~(r->refahead.b[z] | r->calahead.b[z] | addrs.b[z]);
 		if(bany(&bit)) {
 			nearln = r->prog->lineno;
-			warn(Z, "assignment not used: %B", bit);
+			warn(Z, "set and not used: %B", bit);
 			if(debug['R'])
-				print("assignment not used: %B\n", bit);
+				print("set and not used: %B\n", bit);
 			excise(r);
 		}
 		for(z=0; z<BITS; z++)
diff --git a/sys/src/cmd/8c/reg.c b/sys/src/cmd/8c/reg.c
index 70a8f796a..c2bab2d02 100644
--- a/sys/src/cmd/8c/reg.c
+++ b/sys/src/cmd/8c/reg.c
@@ -451,9 +451,9 @@ loop2:
 			  ~(r->refahead.b[z] | r->calahead.b[z] | addrs.b[z]);
 		if(bany(&bit)) {
 			nearln = r->prog->lineno;
-			warn(Z, "assignment not used: %B", bit);
+			warn(Z, "set and not used: %B", bit);
 			if(debug['R'])
-				print("assignment not used: %B\n", bit);
+				print("set and not used: %B\n", bit);
 			excise(r);
 		}
 		for(z=0; z<BITS; z++)
diff --git a/sys/src/cmd/kc/reg.c b/sys/src/cmd/kc/reg.c
index 4f777dcc0..91b5ecc74 100644
--- a/sys/src/cmd/kc/reg.c
+++ b/sys/src/cmd/kc/reg.c
@@ -307,9 +307,9 @@ loop2:
 			  ~(r->refahead.b[z] | r->calahead.b[z] | addrs.b[z]);
 		if(bany(&bit)) {
 			nearln = r->prog->lineno;
-			warn(Z, "assignment not used: %B", bit);
+			warn(Z, "set and not used: %B", bit);
 			if(debug['R'])
-				print("set an not used: %B\n", bit);
+				print("set and not used: %B\n", bit);
 			excise(r);
 		}
 		for(z=0; z<BITS; z++)
diff --git a/sys/src/cmd/qc/reg.c b/sys/src/cmd/qc/reg.c
index bfd275862..332df4334 100644
--- a/sys/src/cmd/qc/reg.c
+++ b/sys/src/cmd/qc/reg.c
@@ -317,9 +317,9 @@ loop2:
 			  ~(r->refahead.b[z] | r->calahead.b[z] | addrs.b[z]);
 		if(bany(&bit)) {
 			nearln = r->prog->lineno;
-			warn(Z, "assignment not used: %B", bit);
+			warn(Z, "set and not used: %B", bit);
 			if(debug['R'])
-				print("set an not used: %B\n", bit);
+				print("set and not used: %B\n", bit);
 			excise(r);
 		}
 		for(z=0; z<BITS; z++)
diff --git a/sys/src/cmd/vc/reg.c b/sys/src/cmd/vc/reg.c
index b6aefa19f..c0d294c98 100644
--- a/sys/src/cmd/vc/reg.c
+++ b/sys/src/cmd/vc/reg.c
@@ -319,9 +319,9 @@ loop2:
 			  ~(r->refahead.b[z] | r->calahead.b[z] | addrs.b[z]);
 		if(bany(&bit)) {
 			nearln = r->prog->lineno;
-			warn(Z, "assignment not used: %B", bit);
+			warn(Z, "set and not used: %B", bit);
 			if(debug['R'])
-				print("assignment not used: %B\n", bit);
+				print("set and not used: %B\n", bit);
 			excise(r);
 		}
 		for(z=0; z<BITS; z++)