diff --git a/core/uwsgi.c b/core/uwsgi.c
index fa81f1a7..7facf96d 100755
--- a/core/uwsgi.c
+++ b/core/uwsgi.c
@@ -4059,6 +4059,11 @@ void uwsgi_opt_set_16bit(char *opt, char *value, void *key) {
 
 void uwsgi_opt_set_megabytes(char *opt, char *value, void *key) {
 	uint64_t *ptr = (uint64_t *) key;
+	if(strchr(value, '.') != NULL) {
+		double megabytes = atof(value);
+		*ptr = (uint64_t)(megabytes * 1024 * 1024);
+		return;
+	}
 	*ptr = (uint64_t)strtoul(value, NULL, 10) * 1024 * 1024;
 }