Fix warning and typo->error.
diff --git a/configs/config-ccm-psk-tls1_2.h b/configs/config-ccm-psk-tls1_2.h
index 1c7c4b4..0c6d128 100644
--- a/configs/config-ccm-psk-tls1_2.h
+++ b/configs/config-ccm-psk-tls1_2.h
@@ -37,9 +37,10 @@
/*
* You should adjust this to the exact number of sources you're using: default
- * is the "platform_entrpy_poll" source, but you may want to add other ones
+ * is the "platform_entropy_poll" source, but you may want to add other ones
+ * Minimum is 2 for the entropy test suite.
*/
-#define ENTROPY_MAX_SOURCES 1
+#define ENTROPY_MAX_SOURCES 2
/*
* Save RAM at the expense of interoperability: do this only if you control
