diff --git a/scripts/ecc-heap.sh b/scripts/ecc-heap.sh
index 8d1beee..76ecf11 100755
--- a/scripts/ecc-heap.sh
+++ b/scripts/ecc-heap.sh
@@ -24,7 +24,7 @@
 
 set -eu
 
-CONFIG_H='include/mbedtls/config.h'
+CONFIG_H='include/mbedtls/mbedtls_config.h'
 
 if [ -r $CONFIG_H ]; then :; else
     echo "$CONFIG_H not found" >&2
@@ -37,7 +37,7 @@
 fi
 
 if git status | grep -F $CONFIG_H >/dev/null 2>&1; then
-    echo "config.h not clean" >&2
+    echo "mbedtls_config.h not clean" >&2
     exit 1
 fi