diff --git a/file.c b/file.c
index da498995c..b9a598e2a 100644
--- a/file.c
+++ b/file.c
@@ -197,7 +197,7 @@ static int try_to_open_csv(const char *filename, struct memblock *mem, enum csv_
 		struct sample *sample;
 
 		errno = 0;
-		val = strtod(p,&end);
+		val = g_ascii_strtod(p,&end);
 		if (end == p)
 			break;
 		if (errno)
diff --git a/parse-xml.c b/parse-xml.c
index 5159a334f..59e9278ad 100644
--- a/parse-xml.c
+++ b/parse-xml.c
@@ -294,7 +294,7 @@ static enum number_type integer_or_float(char *buffer, union int_or_float *res)
 	/* Looks like it might be floating point? */
 	if (*end == '.') {
 		errno = 0;
-		fp = strtod(buffer, &end);
+		fp = g_ascii_strtod(buffer, &end);
 		if (!errno) {
 			res->fp = fp;
 			return FLOAT;