diff --git a/core/sme/inc/csr_support.h b/core/sme/inc/csr_support.h
index cbb4e4408007..3e08c745803c 100644
--- a/core/sme/inc/csr_support.h
+++ b/core/sme/inc/csr_support.h
@@ -321,7 +321,7 @@ QDF_STATUS csr_get_parsed_bss_description_ies(struct mac_context *mac_ctx,
 					      tDot11fBeaconIEs **ppIEStruct);
 
 tSirScanType csr_get_scan_type(struct mac_context *mac, uint8_t chnId);
-uint8_t csr_to_upper(uint8_t ch);
+
 QDF_STATUS csr_get_phy_mode_from_bss(struct mac_context *mac,
 		tSirBssDescription *pBSSDescription,
 		eCsrPhyMode *pPhyMode, tDot11fBeaconIEs *pIes);
diff --git a/core/sme/src/csr/csr_util.c b/core/sme/src/csr/csr_util.c
index 0134b562a496..326be0aeed9c 100644
--- a/core/sme/src/csr/csr_util.c
+++ b/core/sme/src/csr/csr_util.c
@@ -5943,18 +5943,6 @@ tSirScanType csr_get_scan_type(struct mac_context *mac, uint8_t chnId)
 	return scanType;
 }
 
-uint8_t csr_to_upper(uint8_t ch)
-{
-	uint8_t chOut;
-
-	if (ch >= 'a' && ch <= 'z')
-		chOut = ch - 'a' + 'A';
-	else
-		chOut = ch;
-
-	return chOut;
-}
-
 tSirBssType csr_translate_bsstype_to_mac_type(eCsrRoamBssType csrtype)
 {
 	tSirBssType ret;