diff --git a/soes/esc_coe.c b/soes/esc_coe.c
index 61fe5cb..35ea265 100644
--- a/soes/esc_coe.c
+++ b/soes/esc_coe.c
@@ -47,7 +47,7 @@ typedef enum { UPLOAD, DOWNLOAD } load_t;
  * @param[in] subindex   = value on sub-index of object we want to locate
  * @return local array index if we succeed, -1 if we didn't find the index.
  */
-static int16_t SDO_findsubindex (int16_t nidx, uint8_t subindex)
+int16_t SDO_findsubindex (int16_t nidx, uint8_t subindex)
 {
    const _objd *objd;
    int16_t n = 0;
diff --git a/soes/esc_coe.h b/soes/esc_coe.h
index fd96ba0..4476b5f 100644
--- a/soes/esc_coe.h
+++ b/soes/esc_coe.h
@@ -104,6 +104,7 @@ typedef struct
 #define COMPLETE_ACCESS_FLAG    (1 << 15)
 
 void ESC_coeprocess (void);
+int16_t SDO_findsubindex (int16_t nidx, uint8_t subindex);
 uint16_t sizeOfPDO (uint16_t index, int * nmappings, _SMmap * sm, int max_mappings);
 void SDO_abort (uint16_t index, uint8_t subindex, uint32_t abortcode);
 void COE_initDefaultValues (void);