diff --git a/src/honey/sql.cljc b/src/honey/sql.cljc
index f86d74b..cc99359 100644
--- a/src/honey/sql.cljc
+++ b/src/honey/sql.cljc
@@ -247,12 +247,8 @@
   )
 
 (def ^:private alphanumeric
-  "Basic regex for entities that do not need quoting.
-   Either:
-   * all numeric
-   * leading alpha followed by optional alphanumerics
-   (with _ allowed in either)"
-  #"^([0-9_]+|[A-Za-z_][A-Za-z0-9_]*)$")
+  "Basic regex for entities that do not need quoting."
+  #"^[A-Za-z0-9_]+$")
 
 (defn format-entity
   "Given a simple SQL entity (a keyword or symbol -- or string),