diff --git a/csi.c b/csi.c
index 4e74a1dc..c329a0ea 100644
--- a/csi.c
+++ b/csi.c
@@ -194,9 +194,8 @@ csi_sgr(struct terminal *term)
             if (term->vt.params.idx - i - 1 >= 2 &&
                 term->vt.params.v[i + 1].value == 5)
             {
-                size_t idx = term->vt.params.v[i + 2].value;
-                if (idx < 5)
-                    term->vt.attrs.foreground = 1 << 31 | colors256[idx];
+                uint8_t idx = term->vt.params.v[i + 2].value;
+                term->vt.attrs.foreground = 1 << 31 | colors256[idx];
                 i += 2;
 
             }
@@ -257,9 +256,8 @@ csi_sgr(struct terminal *term)
             if (term->vt.params.idx - i - 1 >= 2 &&
                 term->vt.params.v[i + 1].value == 5)
             {
-                size_t idx = term->vt.params.v[i + 2].value;
-                if (idx < 256)
-                    term->vt.attrs.background = 1 << 31 | colors256[idx];
+                uint8_t idx = term->vt.params.v[i + 2].value;
+                term->vt.attrs.background = 1 << 31 | colors256[idx];
                 i += 2;
             }