diff --git a/package/lcdproc/lcdproc.mk b/package/lcdproc/lcdproc.mk
index 5196368a78..e602088fa8 100644
--- a/package/lcdproc/lcdproc.mk
+++ b/package/lcdproc/lcdproc.mk
@@ -22,6 +22,7 @@ LCDPROC_CONF_ENV += ac_cv_path_FT2_CONFIG=$(STAGING_DIR)/usr/bin/freetype-config
 
 ifeq ($(BR2_PACKAGE_LIBPNG),y)
 LCDPROC_DEPENDENCIES += libpng
+LCDPROC_CONF_ENV += ac_cv_path__png_config=$(STAGING_DIR)/usr/bin/libpng-config
 LCDPROC_CONF_OPTS += --enable-libpng
 else
 LCDPROC_CONF_OPTS += --disable-libpng