diff --git a/kitty/child-monitor.c b/kitty/child-monitor.c
index 5df2838f1..37f4666fd 100644
--- a/kitty/child-monitor.c
+++ b/kitty/child-monitor.c
@@ -391,7 +391,7 @@ resize_pty(ChildMonitor *self, PyObject *args) {
     if (fd == -1) FIND(add_queue, add_queue_count);
     if (fd != -1) {
         if (!pty_resize(fd, &dim)) PyErr_SetFromErrno(PyExc_OSError);
-    } else fprintf(stderr, "Failed to send resize signal to child with id: %lu (children count: %u) (add queue: %lu)\n", window_id, self->count, add_queue_count);
+    } else fprintf(stderr, "Failed to send resize signal to child with id: %lu (children count: %u) (add queue: %zu)\n", window_id, self->count, add_queue_count);
     children_mutex(unlock);
     if (PyErr_Occurred()) return NULL;
     Py_RETURN_NONE;
diff --git a/kitty/freetype.c b/kitty/freetype.c
index 5ba478c17..2920a8412 100644
--- a/kitty/freetype.c
+++ b/kitty/freetype.c
@@ -130,7 +130,8 @@ set_font_size(Face *self, FT_F26Dot6 char_width, FT_F26Dot6 char_height, FT_UInt
 bool
 set_size_for_face(PyObject *s, unsigned int desired_height, bool force) {
     Face *self = (Face*)s;
-    FT_UInt w = (FT_UInt)(ceil(global_state.font_sz_in_pts * 64.0)), xdpi = (FT_UInt)global_state.logical_dpi_x, ydpi = (FT_UInt)global_state.logical_dpi_y;
+    FT_F26Dot6 w = (FT_F26Dot6)(ceil(global_state.font_sz_in_pts * 64.0));
+    FT_UInt xdpi = (FT_UInt)global_state.logical_dpi_x, ydpi = (FT_UInt)global_state.logical_dpi_y;
     if (!force && (self->char_width == w && self->char_height == w && self->xdpi == xdpi && self->ydpi == ydpi)) return true;
     ((Face*)self)->size_in_pts = global_state.font_sz_in_pts;
     return set_font_size(self, w, w, xdpi, ydpi, desired_height);
diff --git a/kitty/line.c b/kitty/line.c
index 89fc2ad0a..d3aa7a71a 100644
--- a/kitty/line.c
+++ b/kitty/line.c
@@ -161,7 +161,7 @@ url_end_at(Line *self, PyObject *x) {
 static PyObject*
 text_at(Line* self, Py_ssize_t xval) {
 #define text_at_doc "[x] -> Return the text in the specified cell"
-    if (xval >= self->xnum) { PyErr_SetString(PyExc_IndexError, "Column number out of bounds"); return NULL; }
+    if ((unsigned)xval >= self->xnum) { PyErr_SetString(PyExc_IndexError, "Column number out of bounds"); return NULL; }
     return line_text_at(self->cells[xval].ch, self->cells[xval].cc);
 }