diff --git a/js/src/ctypes/CTypes.cpp b/js/src/ctypes/CTypes.cpp
index 4c5504365d5..c00399c781f 100644
--- a/js/src/ctypes/CTypes.cpp
+++ b/js/src/ctypes/CTypes.cpp
@@ -787,14 +787,14 @@ GetABICode(JSObject* obj)
   return ABICode(JSVAL_TO_INT(result));
 }
 
-JSErrorFormatString ErrorFormatString[CTYPESERR_LIMIT] = {
+static JSErrorFormatString ErrorFormatString[CTYPESERR_LIMIT] = {
 #define MSG_DEF(name, number, count, exception, format) \
   { format, count, exception } ,
 #include "ctypes/ctypes.msg"
 #undef MSG_DEF
 };
 
-const JSErrorFormatString*
+static const JSErrorFormatString*
 GetErrorMessage(void* userRef, const char* locale, const unsigned errorNumber)
 {
   if (0 < errorNumber && errorNumber < CTYPESERR_LIMIT)
@@ -802,7 +802,7 @@ GetErrorMessage(void* userRef, const char* locale, const unsigned errorNumber)
   return NULL;
 }
 
-JSBool
+static JSBool
 TypeError(JSContext* cx, const char* expected, jsval actual)
 {
   JSString* str = JS_ValueToSource(cx, actual);
@@ -1009,7 +1009,7 @@ InitTypeConstructor(JSContext* cx,
   return true;
 }
 
-JSObject*
+static JSObject*
 InitInt64Class(JSContext* cx,
                HandleObject parent,
                JSClass* clasp,
@@ -1057,7 +1057,7 @@ AttachProtos(JSObject* proto, const AutoObjectVector& protos)
     JS_SetReservedSlot(proto, i, OBJECT_TO_JSVAL(protos[i]));
 }
 
-JSBool
+static JSBool
 InitTypeClasses(JSContext* cx, HandleObject parent)
 {
   // Initialize the ctypes.CType class. This acts as an abstract base class for
@@ -1253,8 +1253,8 @@ GetCallbacks(JSObject* obj)
 // Utility function to access a property of an object as an object
 // returns false and sets the error if the property does not exist
 // or is not an object
-bool GetObjectProperty(JSContext *cx, HandleObject obj,
-                       const char *property, MutableHandleObject result)
+static bool GetObjectProperty(JSContext *cx, HandleObject obj,
+                              const char *property, MutableHandleObject result)
 {
   RootedValue val(cx);
   if (!JS_GetProperty(cx, obj, property, val.address())) {
@@ -2032,7 +2032,7 @@ strnlen(const CharType* begin, size_t max)
 //   parent's buffer.
 // * If 'parentObj' is null, the new CData object may or may not own its
 //   resulting buffer depending on the 'ownResult' argument.
-JSBool
+static JSBool
 ConvertToJS(JSContext* cx,
             HandleObject typeObj,
             HandleObject parentObj,
@@ -2187,7 +2187,7 @@ bool CanConvertTypedArrayItemTo(JSObject *baseType, JSObject *valObj, JSContext
 //    we can autoconvert a JS string primitive to a pointer-to-character type.
 //    In this case, ownership of the allocated string is handed off to the
 //    caller; 'freePointer' will be set to indicate this.
-JSBool
+static JSBool
 ImplicitConvert(JSContext* cx,
                 HandleValue val,
                 JSObject* targetType_,
@@ -2578,7 +2578,7 @@ ImplicitConvert(JSContext* cx,
 // Convert jsval 'val' to a C binary representation of CType 'targetType',
 // storing the result in 'buffer'. This function is more forceful than
 // ImplicitConvert.
-JSBool
+static JSBool
 ExplicitConvert(JSContext* cx, HandleValue val, HandleObject targetType, void* buffer)
 {
   // If ImplicitConvert succeeds, use that result.
diff --git a/js/src/ctypes/CTypes.h b/js/src/ctypes/CTypes.h
index 9f92e0b5146..dfc650ea06c 100644
--- a/js/src/ctypes/CTypes.h
+++ b/js/src/ctypes/CTypes.h
@@ -183,10 +183,6 @@ enum ErrorNum {
   CTYPESERR_LIMIT
 };
 
-const JSErrorFormatString*
-GetErrorMessage(void* userRef, const char* locale, const unsigned errorNumber);
-JSBool TypeError(JSContext* cx, const char* expected, jsval actual);
-
 /**
  * ABI constants that specify the calling convention to use.
  * ctypes.default_abi corresponds to the cdecl convention, and in almost all
@@ -311,17 +307,6 @@ bool IsCTypesGlobal(JSObject* obj);
 
 JSCTypesCallbacks* GetCallbacks(JSObject* obj);
 
-JSBool InitTypeClasses(JSContext* cx, HandleObject parent);
-
-JSBool ConvertToJS(JSContext* cx, HandleObject typeObj, HandleObject dataObj,
-  void* data, bool wantPrimitive, bool ownResult, jsval* result);
-
-JSBool ImplicitConvert(JSContext* cx, HandleValue val, JSObject* targetType,
-  void* buffer, bool isArgument, bool* freePointer);
-
-JSBool ExplicitConvert(JSContext* cx, HandleValue val, HandleObject targetType,
-  void* buffer);
-
 /*******************************************************************************
 ** JSClass reserved slot definitions
 *******************************************************************************/