diff --git a/package/azure-iot-sdk-c/Config.in b/package/azure-iot-sdk-c/Config.in
index c554d2fb9b..860746524c 100644
--- a/package/azure-iot-sdk-c/Config.in
+++ b/package/azure-iot-sdk-c/Config.in
@@ -2,6 +2,7 @@ config BR2_PACKAGE_AZURE_IOT_SDK_C
 	bool "azure-iot-sdk-c"
 	depends on BR2_INSTALL_LIBSTDCPP
 	depends on BR2_TOOLCHAIN_HAS_THREADS_NPTL
+	depends on BR2_USE_WCHAR
 	select BR2_PACKAGE_LIBCURL
 	select BR2_PACKAGE_LIBXML2
 	select BR2_PACKAGE_OPENSSL
@@ -13,5 +14,6 @@ config BR2_PACKAGE_AZURE_IOT_SDK_C
 
 	  https://github.com/Azure/azure-iot-sdk-c
 
-comment "azure-iot-sdk-c needs a toolchain w/ C++ and NPTL"
-	depends on !BR2_INSTALL_LIBSTDCPP || !BR2_TOOLCHAIN_HAS_THREADS_NPTL
+comment "azure-iot-sdk-c needs a toolchain w/ C++, NPTL and wchar"
+	depends on !BR2_INSTALL_LIBSTDCPP || \
+		!BR2_TOOLCHAIN_HAS_THREADS_NPTL || !BR2_USE_WCHAR