diff --git a/sailfish-compiler/src/optimizer.rs b/sailfish-compiler/src/optimizer.rs
index 4693803..e5791fd 100644
--- a/sailfish-compiler/src/optimizer.rs
+++ b/sailfish-compiler/src/optimizer.rs
@@ -22,7 +22,7 @@ impl Parse for RenderTextMacroArgument {
 fn get_rendertext_value(i: &ExprMacro) -> Option<String> {
     let mut it = i.mac.path.segments.iter();
 
-    if it.next().map_or(false, |s| s.ident == "sfrt")
+    if it.next().map_or(false, |s| s.ident == "__sf_rt")
         && it.next().map_or(false, |s| s.ident == "render_text")
         && it.next().is_none()
     {
@@ -74,12 +74,12 @@ impl VisitMut for OptmizerImpl {
 
         fl.body.stmts.remove(0);
         *fl.body.stmts.last_mut().unwrap() = syn::parse2(quote! {
-            sfrt::render_text!(_ctx, #concat);
+            __sf_rt::render_text!(_ctx, #concat);
         })
         .unwrap();
 
         let new_expr = syn::parse2(quote! {{
-            sfrt::render_text!(_ctx, #sf);
+            __sf_rt::render_text!(_ctx, #sf);
             #fl;
             unsafe { _ctx.buf.set_len(_ctx.buf.len() - #sf_len); }
         }})
diff --git a/sailfish-compiler/src/procmacro.rs b/sailfish-compiler/src/procmacro.rs
index 43e0530..d02c70a 100644
--- a/sailfish-compiler/src/procmacro.rs
+++ b/sailfish-compiler/src/procmacro.rs
@@ -270,13 +270,13 @@ fn derive_template_impl(tokens: TokenStream) -> Result<TokenStream, syn::Error>
             fn render_once_to_string(self, buf: &mut String) -> Result<(), sailfish::runtime::RenderError> {
                 #include_bytes_seq;
 
-                use sailfish::runtime as sfrt;
-                use sfrt::RenderInternal as _;
+                use sailfish::runtime as __sf_rt;
+                use __sf_rt::RenderInternal as _;
 
-                static SIZE_HINT: sfrt::SizeHint = sfrt::SizeHint::new();
+                static SIZE_HINT: __sf_rt::SizeHint = __sf_rt::SizeHint::new();
 
-                let mut _ctx = sfrt::Context {
-                    buf: sfrt::Buffer::from(std::mem::take(buf))
+                let mut _ctx = __sf_rt::Context {
+                    buf: __sf_rt::Buffer::from(std::mem::take(buf))
                 };
 
                 let _size_hint = SIZE_HINT.get();
diff --git a/sailfish-compiler/src/translator.rs b/sailfish-compiler/src/translator.rs
index ac9a0e6..be5c115 100644
--- a/sailfish-compiler/src/translator.rs
+++ b/sailfish-compiler/src/translator.rs
@@ -106,7 +106,7 @@ impl SourceBuilder {
     fn write_text<'a>(&mut self, token: &Token<'a>) {
         use std::fmt::Write;
 
-        self.source.push_str("sfrt::render_text!(_ctx, ");
+        self.source.push_str("__sf_rt::render_text!(_ctx, ");
 
         // write text token with Debug::fmt
         write!(self.source, "{:?}", token.as_str()).unwrap();
@@ -121,7 +121,7 @@ impl SourceBuilder {
             "render"
         };
 
-        self.source.push_str("sfrt::");
+        self.source.push_str("__sf_rt::");
         self.source.push_str(method);
         self.source.push_str("!(_ctx, ");
         self.write_token(token);