diff --git a/src/cmd/5l/asm.c b/src/cmd/5l/asm.c
index fe3a2f3f2aa..df33fbe2510 100644
--- a/src/cmd/5l/asm.c
+++ b/src/cmd/5l/asm.c
@@ -91,6 +91,7 @@ needlib(char *name)
 	/* reuse hash code in symbol table */
 	p = smprint(".dynlib.%s", name);
 	s = lookup(p, 0);
+	free(p);
 	if(s->type == 0) {
 		s->type = 100;	// avoid SDATA, etc.
 		return 1;
diff --git a/src/cmd/6l/asm.c b/src/cmd/6l/asm.c
index 7d36b170eb6..121aa8613ed 100644
--- a/src/cmd/6l/asm.c
+++ b/src/cmd/6l/asm.c
@@ -112,6 +112,7 @@ needlib(char *name)
 	/* reuse hash code in symbol table */
 	p = smprint(".elfload.%s", name);
 	s = lookup(p, 0);
+	free(p);
 	if(s->type == 0) {
 		s->type = 100;	// avoid SDATA, etc.
 		return 1;
diff --git a/src/cmd/8l/asm.c b/src/cmd/8l/asm.c
index 0fe4cf1123c..dcaa0b192b8 100644
--- a/src/cmd/8l/asm.c
+++ b/src/cmd/8l/asm.c
@@ -108,6 +108,7 @@ needlib(char *name)
 	/* reuse hash code in symbol table */
 	p = smprint(".dynlib.%s", name);
 	s = lookup(p, 0);
+	free(p);
 	if(s->type == 0) {
 		s->type = 100;	// avoid SDATA, etc.
 		return 1;
diff --git a/src/cmd/ld/go.c b/src/cmd/ld/go.c
index 2bda628cdec..3271be1f597 100644
--- a/src/cmd/ld/go.c
+++ b/src/cmd/ld/go.c
@@ -482,6 +482,7 @@ loaddynimport(char *file, char *pkg, char *p, int n)
 		if(q)
 			*q++ = '\0';
 		s = lookup(name, 0);
+		free(name);
 		if(s->type == 0 || s->type == SXREF) {
 			s->dynimplib = lib;
 			s->dynimpname = def;