diff --git a/include/libweston/libweston.h b/include/libweston/libweston.h
index 73f132b09..c5f8abdb0 100644
--- a/include/libweston/libweston.h
+++ b/include/libweston/libweston.h
@@ -278,6 +278,9 @@ enum weston_colorimetry_mode {
 		    WESTON_COLORIMETRY_MODE_P3DCI | \
 		    WESTON_COLORIMETRY_MODE_ICTCP))
 
+const char *
+weston_colorimetry_mode_to_str(enum weston_colorimetry_mode c);
+
 /** EOTF mode for outputs and heads
  *
  * A list of EOTF modes for driving displays, defined by CTA-861-G for
@@ -312,6 +315,9 @@ enum weston_eotf_mode {
 	((uint32_t)(WESTON_EOTF_MODE_SDR | WESTON_EOTF_MODE_TRADITIONAL_HDR | \
 		    WESTON_EOTF_MODE_ST2084 | WESTON_EOTF_MODE_HLG))
 
+const char *
+weston_eotf_mode_to_str(enum weston_eotf_mode e);
+
 /** CIE 1931 xy chromaticity coordinates */
 struct weston_CIExy {
 	float x;
diff --git a/libweston/color.c b/libweston/color.c
index 963ca73b9..c17e41795 100644
--- a/libweston/color.c
+++ b/libweston/color.c
@@ -464,9 +464,9 @@ out_close:
 	return cprof;
 }
 
-/** Get a string naming the EOTF mode
+/** Get a string naming the EOTF mode for logs
  *
- * \internal
+ * \return Static string. "???" for unknown mode.
  */
 WL_EXPORT const char *
 weston_eotf_mode_to_str(enum weston_eotf_mode e)
@@ -536,9 +536,9 @@ weston_colorimetry_mode_info_get_by_wdrm(enum wdrm_colorspace cs)
 	return NULL;
 }
 
-/** Get a string naming the colorimetry mode
+/** Get a string naming the colorimetry mode for logs
  *
- * \internal
+ * \return Static string. "???" for unknown mode.
  */
 WL_EXPORT const char *
 weston_colorimetry_mode_to_str(enum weston_colorimetry_mode c)
diff --git a/libweston/color.h b/libweston/color.h
index 043c59171..9124b3f63 100644
--- a/libweston/color.h
+++ b/libweston/color.h
@@ -631,9 +631,6 @@ weston_color_manager_noop_create(struct weston_compositor *compositor);
 struct weston_color_manager *
 weston_color_manager_create(struct weston_compositor *compositor);
 
-const char *
-weston_eotf_mode_to_str(enum weston_eotf_mode e);
-
 char *
 weston_eotf_mask_to_str(uint32_t eotf_mask);
 
@@ -654,9 +651,6 @@ weston_colorimetry_mode_info_get(enum weston_colorimetry_mode c);
 const struct weston_colorimetry_mode_info *
 weston_colorimetry_mode_info_get_by_wdrm(enum wdrm_colorspace cs);
 
-const char *
-weston_colorimetry_mode_to_str(enum weston_colorimetry_mode c);
-
 char *
 weston_colorimetry_mask_to_str(uint32_t colorimetry_mask);