diff --git a/dlls/mshtml/htmlcomment.c b/dlls/mshtml/htmlcomment.c
index abb71a814b4..0d3d450a5bc 100644
--- a/dlls/mshtml/htmlcomment.c
+++ b/dlls/mshtml/htmlcomment.c
@@ -169,7 +169,7 @@ static void HTMLCommentElement_destructor(HTMLDOMNode *iface)
     HTMLElement_destructor(&This->element.node);
 }
 
-HRESULT HTMLCommentElement_clone(HTMLDOMNode *iface, nsIDOMNode *nsnode, HTMLDOMNode **ret)
+static HRESULT HTMLCommentElement_clone(HTMLDOMNode *iface, nsIDOMNode *nsnode, HTMLDOMNode **ret)
 {
     HTMLCommentElement *This = impl_from_HTMLDOMNode(iface);
     HTMLElement *new_elem;
diff --git a/dlls/mshtml/htmlstyle.c b/dlls/mshtml/htmlstyle.c
index aea6a9208ee..65083ab9736 100644
--- a/dlls/mshtml/htmlstyle.c
+++ b/dlls/mshtml/htmlstyle.c
@@ -396,7 +396,7 @@ static LPWSTR fix_url_value(LPCWSTR val)
     return ret;
 }
 
-HRESULT set_nsstyle_attr(nsIDOMCSSStyleDeclaration *nsstyle, styleid_t sid, const WCHAR *value, DWORD flags)
+static HRESULT set_nsstyle_attr(nsIDOMCSSStyleDeclaration *nsstyle, styleid_t sid, const WCHAR *value, DWORD flags)
 {
     nsAString str_name, str_value, str_empty;
     LPWSTR val = NULL;
@@ -461,7 +461,7 @@ static HRESULT var_to_styleval(const VARIANT *v, WCHAR *buf, DWORD flags, const
     }
 }
 
-HRESULT set_nsstyle_attr_var(nsIDOMCSSStyleDeclaration *nsstyle, styleid_t sid, VARIANT *value, DWORD flags)
+static HRESULT set_nsstyle_attr_var(nsIDOMCSSStyleDeclaration *nsstyle, styleid_t sid, VARIANT *value, DWORD flags)
 {
     const WCHAR *val;
     WCHAR buf[14];
diff --git a/dlls/mshtml/htmlstyle.h b/dlls/mshtml/htmlstyle.h
index e9de1519b72..fbf2ac0cda6 100644
--- a/dlls/mshtml/htmlstyle.h
+++ b/dlls/mshtml/htmlstyle.h
@@ -124,9 +124,7 @@ typedef enum {
 HRESULT HTMLStyle_Create(HTMLElement*,HTMLStyle**) DECLSPEC_HIDDEN;
 
 HRESULT get_nsstyle_attr(nsIDOMCSSStyleDeclaration*,styleid_t,BSTR*,DWORD) DECLSPEC_HIDDEN;
-HRESULT set_nsstyle_attr(nsIDOMCSSStyleDeclaration*,styleid_t,LPCWSTR,DWORD) DECLSPEC_HIDDEN;
 
-HRESULT set_nsstyle_attr_var(nsIDOMCSSStyleDeclaration *nsstyle, styleid_t sid, VARIANT *value, DWORD flags) DECLSPEC_HIDDEN;
 HRESULT get_nsstyle_attr_var(nsIDOMCSSStyleDeclaration *nsstyle, styleid_t sid, VARIANT *p, DWORD flags) DECLSPEC_HIDDEN;
 
 HRESULT get_elem_style(HTMLElement*,styleid_t,BSTR*) DECLSPEC_HIDDEN;