diff --git a/common/json_param.c b/common/json_param.c
index b95952dd48be..c9e3070e3e4b 100644
--- a/common/json_param.c
+++ b/common/json_param.c
@@ -975,8 +975,7 @@ struct command_result *param_extra_tlvs(struct command *cmd, const char *name,
 		/* Accept either bare ints as keys (not spec
 		 * compliant, but simpler), or ints in strings, which
 		 * are JSON spec compliant. */
-		if (!(json_str_to_u64(buffer, curr, &f->numtype) ||
-		      json_to_u64(buffer, curr, &f->numtype))) {
+		if (!json_to_u64(buffer, curr, &f->numtype)) {
 			return command_fail(
 			    cmd, JSONRPC2_INVALID_PARAMS,
 			    "\"%s\" is not a valid numeric TLV type.",
diff --git a/common/json_parse_simple.c b/common/json_parse_simple.c
index 7f9c630ebeb2..53e9470ca711 100644
--- a/common/json_parse_simple.c
+++ b/common/json_parse_simple.c
@@ -112,19 +112,6 @@ bool json_to_s64(const char *buffer, const jsmntok_t *tok, s64 *num)
 	return true;
 }
 
-bool json_str_to_u64(const char *buffer, const jsmntok_t *tok, u64 *num)
-{
-	jsmntok_t temp;
-	if (tok->type != JSMN_STRING)
-		return false;
-
-	temp = *tok;
-	temp.start += 1;
-	temp.end -= 1;
-
-	return json_to_u64(buffer, &temp, num);
-}
-
 bool json_to_double(const char *buffer, const jsmntok_t *tok, double *num)
 {
 	char *end;
diff --git a/common/json_parse_simple.h b/common/json_parse_simple.h
index 710520d6f327..6b5a2b068567 100644
--- a/common/json_parse_simple.h
+++ b/common/json_parse_simple.h
@@ -38,10 +38,6 @@ bool json_to_u64(const char *buffer, const jsmntok_t *tok, u64 *num);
 /* Extract signed 64 bit integer from this (may be a string, or a number literal) */
 bool json_to_s64(const char *buffer, const jsmntok_t *tok, s64 *num);
 
-/* Extract number from string. The number must be the entirety of the
- * string between the '"' */
-bool json_str_to_u64(const char *buffer, const jsmntok_t *tok, u64 *num);
-
 /* Extract number from this (may be a string, or a number literal) */
 bool json_to_u32(const char *buffer, const jsmntok_t *tok, u32 *num);