diff --git a/mongoose.h b/mongoose.h
index 279fbd6b..31107929 100644
--- a/mongoose.h
+++ b/mongoose.h
@@ -3157,15 +3157,7 @@ enum mg_val_type {
   MG_VAL_BOOL,
   MG_VAL_DBL,
   MG_VAL_STR,
-  MG_VAL_RAW
-};
-
-union mg_val {
-  int i;
-  bool b;
-  double d;
-  char *s;
-  void (*fn)(void);
+  MG_VAL_RAW,
 };
 
 struct mg_field {
diff --git a/src/dash.h b/src/dash.h
index 9d491162..b799dc76 100644
--- a/src/dash.h
+++ b/src/dash.h
@@ -15,14 +15,6 @@ enum mg_val_type {
   MG_VAL_RAW,
 };
 
-union mg_val {
-  int i;
-  bool b;
-  double d;
-  char *s;
-  void (*fn)(void);
-};
-
 struct mg_field {
   const char *name;
   enum mg_val_type type;