diff --git a/kitty/colors.c b/kitty/colors.c
index 37e25df82..d1250e069 100644
--- a/kitty/colors.c
+++ b/kitty/colors.c
@@ -177,7 +177,7 @@ patch_color_profiles(PyObject *module UNUSED, PyObject *args) {
 }
 
 DynamicColor
-colorprofile_to_color(ColorProfile *self, DynamicColor entry, DynamicColor defval) {
+colorprofile_to_color(const ColorProfile *self, DynamicColor entry, DynamicColor defval) {
     switch(entry.type) {
         case COLOR_NOT_SET:
             return defval;
diff --git a/kitty/data-types.h b/kitty/data-types.h
index 782d9f115..f09c3bdb5 100644
--- a/kitty/data-types.h
+++ b/kitty/data-types.h
@@ -403,7 +403,7 @@ bool schedule_write_to_child(unsigned long id, unsigned int num, ...);
 bool schedule_write_to_child_python(unsigned long id, const char *prefix, PyObject* tuple_of_str_or_bytes, const char *suffix);
 bool set_iutf8(int, bool);
 
-DynamicColor colorprofile_to_color(ColorProfile *self, DynamicColor entry, DynamicColor defval);
+DynamicColor colorprofile_to_color(const ColorProfile *self, DynamicColor entry, DynamicColor defval);
 color_type
 colorprofile_to_color_with_fallback(ColorProfile *self, DynamicColor entry, DynamicColor defval, DynamicColor fallback, DynamicColor falback_defval);
 void copy_color_table_to_buffer(ColorProfile *self, color_type *address, int offset, size_t stride);
diff --git a/kitty/line.c b/kitty/line.c
index 8b2910ada..0ff98e085 100644
--- a/kitty/line.c
+++ b/kitty/line.c
@@ -614,7 +614,7 @@ left_shift(Line *self, PyObject *args) {
 }
 
 static color_type
-resolve_color(ColorProfile *cp, color_type val, color_type defval) {
+resolve_color(const ColorProfile *cp, color_type val, color_type defval) {
     switch(val & 0xff) {
         case 1:
             return cp->color_table[(val >> 8) & 0xff];
@@ -626,7 +626,7 @@ resolve_color(ColorProfile *cp, color_type val, color_type defval) {
 }
 
 bool
-colors_for_cell(Line *self, ColorProfile *cp, index_type *x, color_type *fg, color_type *bg, bool *reversed) {
+colors_for_cell(Line *self, const ColorProfile *cp, index_type *x, color_type *fg, color_type *bg, bool *reversed) {
     if (*x >= self->xnum) return false;
     if (*x > 0 && !self->gpu_cells[*x].attrs.width && self->gpu_cells[*x-1].attrs.width == 2) (*x)--;
     *fg = resolve_color(cp, self->gpu_cells[*x].fg, *fg);
diff --git a/kitty/lineops.h b/kitty/lineops.h
index 241e34ac1..aa4c25d41 100644
--- a/kitty/lineops.h
+++ b/kitty/lineops.h
@@ -132,4 +132,4 @@ void historybuf_clear(HistoryBuf *self);
 void mark_text_in_line(PyObject *marker, Line *line);
 bool line_has_mark(Line *, uint16_t mark);
 PyObject* as_text_generic(PyObject *args, void *container, get_line_func get_line, index_type lines, ANSIBuf *ansibuf, bool add_trailing_newline);
-bool colors_for_cell(Line *self, ColorProfile *cp, index_type *x, color_type *fg, color_type *bg, bool *reversed);
+bool colors_for_cell(Line *self, const ColorProfile *cp, index_type *x, color_type *fg, color_type *bg, bool *reversed);
diff --git a/kitty/shaders.c b/kitty/shaders.c
index 58b7bda1a..1e50c8435 100644
--- a/kitty/shaders.c
+++ b/kitty/shaders.c
@@ -275,7 +275,7 @@ create_graphics_vao(void) {
 #define IS_SPECIAL_COLOR(name) (screen->color_profile->overridden.name.type == COLOR_IS_SPECIAL || (screen->color_profile->overridden.name.type == COLOR_NOT_SET && screen->color_profile->configured.name.type == COLOR_IS_SPECIAL))
 
 static void
-pick_cursor_color(Line *line, ColorProfile *color_profile, color_type cell_fg, color_type cell_bg, index_type cell_color_x, color_type *cursor_fg, color_type *cursor_bg, color_type default_fg, color_type default_bg) {
+pick_cursor_color(Line *line, const ColorProfile *color_profile, color_type cell_fg, color_type cell_bg, index_type cell_color_x, color_type *cursor_fg, color_type *cursor_bg, color_type default_fg, color_type default_bg) {
     ARGB32 fg, bg, dfg, dbg;
     (void) line; (void) color_profile; (void) cell_color_x;
     fg.rgb = cell_fg; bg.rgb = cell_bg;