diff --git a/conway.c b/conway.c
index f029ade..594f357 100644
--- a/conway.c
+++ b/conway.c
@@ -88,11 +88,11 @@ int main(int argc, char **argv) {
             if (i + 1 >= argc) goto usage;
             int r,g,b;
             if (gethexrgb(argv[++i], &r, &g, &b) != 3) goto usage;
-            sprintf(alive_color, "\033[48;2;%d;%d;%d;m", r,g,b);
+            sprintf(alive_color, "\033[48;2;%d;%d;%dm", r,g,b);
         } else if (strcmp(argv[i], "-D") == 0) {
             int r,g,b;
             if (gethexrgb(argv[++i], &r, &g, &b) != 3) goto usage;
-            sprintf(dead_color, "\033[48;2;%d;%d;%d;m", r,g,b);
+            sprintf(dead_color, "\033[48;2;%d;%d;%dm", r,g,b);
         } else {
             goto usage;
         }