diff --git a/src/builtin_set_color.cpp b/src/builtin_set_color.cpp
index 78857285e..e0f98261f 100644
--- a/src/builtin_set_color.cpp
+++ b/src/builtin_set_color.cpp
@@ -193,7 +193,7 @@ int builtin_set_color(parser_t &parser, io_streams_t &streams, wchar_t **argv) {
     output_set_writer(set_color_builtin_outputter);
 
     if (bold && enter_bold_mode) {
-        writembs_nofail(tparm(enter_bold_mode));
+        writembs_nofail(tparm((char *)enter_bold_mode));
     }
 
     if (underline && enter_underline_mode) {
@@ -216,13 +216,13 @@ int builtin_set_color(parser_t &parser, io_streams_t &streams, wchar_t **argv) {
 
     if (bgcolor != NULL && bg.is_normal()) {
         write_color(rgb_color_t::black(), false /* not is_fg */);
-        writembs_nofail(tparm(exit_attribute_mode));
+        writembs_nofail(tparm((char *)exit_attribute_mode));
     }
 
     if (!fg.is_none()) {
         if (fg.is_normal() || fg.is_reset()) {
             write_color(rgb_color_t::black(), true /* is_fg */);
-            writembs_nofail(tparm(exit_attribute_mode));
+            writembs_nofail(tparm((char *)exit_attribute_mode));
         } else {
             if (!write_color(fg, true /* is_fg */)) {
                 // We need to do *something* or the lack of any output messes up
diff --git a/src/output.cpp b/src/output.cpp
index 129ed701c..f6bf3dc6d 100644
--- a/src/output.cpp
+++ b/src/output.cpp
@@ -66,7 +66,7 @@ unsigned char index_for_color(rgb_color_t c) {
 static bool write_color_escape(char *todo, unsigned char idx, bool is_fg) {
     if (term_supports_color_natively(idx)) {
         // Use tparm to emit color escape.
-        writembs(tparm(todo, idx));
+        writembs(tparm((char *)todo, idx));
         return true;
     }
 
@@ -332,7 +332,7 @@ void set_color(rgb_color_t c, rgb_color_t c2) {
 
     // Lastly, we set bold, underline, italics, dim, and reverse modes correctly.
     if (is_bold && !was_bold && enter_bold_mode && strlen(enter_bold_mode) > 0 && !bg_set) {
-        writembs_nofail(tparm(enter_bold_mode));
+        writembs_nofail(tparm((char *)enter_bold_mode));
         was_bold = is_bold;
     }
 
diff --git a/src/screen.cpp b/src/screen.cpp
index ebc085a4f..54b65bbb9 100644
--- a/src/screen.cpp
+++ b/src/screen.cpp
@@ -222,7 +222,7 @@ static bool is_color_escape_seq(const wchar_t *code, size_t *resulting_length) {
         if (!esc[p]) continue;
 
         for (int k = 0; k < max_colors; k++) {
-            size_t esc_seq_len = try_sequence(tparm(esc[p], k), code);
+            size_t esc_seq_len = try_sequence(tparm((char *)esc[p], k), code);
             if (esc_seq_len) {
                 *resulting_length = esc_seq_len;
                 return true;
@@ -250,7 +250,7 @@ static bool is_visual_escape_seq(const wchar_t *code, size_t *resulting_length)
         if (!esc2[p]) continue;
         // Test both padded and unpadded version, just to be safe. Most versions of tparm don't
         // actually seem to do anything these days.
-        size_t esc_seq_len = maxi(try_sequence(tparm(esc2[p]), code), try_sequence(esc2[p], code));
+        size_t esc_seq_len = maxi(try_sequence(tparm((char *)esc2[p]), code), try_sequence(esc2[p], code));
         if (esc_seq_len) {
             *resulting_length = esc_seq_len;
             return true;
@@ -526,7 +526,7 @@ static void s_move(screen_t *s, data_buffer_t *b, int new_x, int new_y) {
     bool use_multi =
         multi_str != NULL && multi_str[0] != '\0' && abs(x_steps) * strlen(str) > strlen(multi_str);
     if (use_multi && cur_term) {
-        char *multi_param = tparm(multi_str, abs(x_steps));
+        char *multi_param = tparm((char *)multi_str, abs(x_steps));
         writembs(multi_param);
     } else {
         for (i = 0; i < abs(x_steps); i++) {
@@ -1151,7 +1151,7 @@ void s_reset(screen_t *s, screen_reset_mode_t mode) {
         if (screen_width > non_space_width) {
             bool justgrey = true;
             if (cur_term && enter_dim_mode) {
-                std::string dim = tparm(enter_dim_mode);
+                std::string dim = tparm((char *)enter_dim_mode);
                 if (!dim.empty()) {
                     // Use dim if they have it, so the color will be based on their actual normal
                     // color and the background of the termianl.
@@ -1162,14 +1162,14 @@ void s_reset(screen_t *s, screen_reset_mode_t mode) {
             if (cur_term && justgrey && set_a_foreground) {
                 if (max_colors >= 238) {
                     // draw the string in a particular grey
-                    abandon_line_string.append(str2wcstring(tparm(set_a_foreground, 237)));
+                    abandon_line_string.append(str2wcstring(tparm((char *)set_a_foreground, 237)));
                 } else if (max_colors >= 9) {
                     // bright black (the ninth color, looks grey)
-                    abandon_line_string.append(str2wcstring(tparm(set_a_foreground, 8)));
+                    abandon_line_string.append(str2wcstring(tparm((char *)set_a_foreground, 8)));
                 } else if (max_colors >= 2 && enter_bold_mode) {
                     // we might still get that color by setting black and going bold for bright
-                    abandon_line_string.append(str2wcstring(tparm(enter_bold_mode)));
-                    abandon_line_string.append(str2wcstring(tparm(set_a_foreground, 0)));
+                    abandon_line_string.append(str2wcstring(tparm((char *)enter_bold_mode)));
+                    abandon_line_string.append(str2wcstring(tparm((char *)set_a_foreground, 0)));
                 }
             }
 
@@ -1177,7 +1177,7 @@ void s_reset(screen_t *s, screen_reset_mode_t mode) {
 
             if (cur_term && exit_attribute_mode) {
                 abandon_line_string.append(
-                    str2wcstring(tparm(exit_attribute_mode)));  // normal text ANSI escape sequence
+                        str2wcstring(tparm((char *)exit_attribute_mode)));  // normal text ANSI escape sequence
             }
 
             int newline_glitch_width = term_has_xn ? 0 : 1;