diff --git a/src/encoders/wat.rs b/src/encoders/wat.rs
index d4965f1..342b0a4 100644
--- a/src/encoders/wat.rs
+++ b/src/encoders/wat.rs
@@ -176,7 +176,7 @@ fn encode_function_arguments(arguments: &[FunctionArg]) -> String {
     }
 
     format!(
-        "(params{})",
+        " (params{})",
         arguments.iter().fold(
             String::new(),
             |mut accumulator, FunctionArg { name, ty }| {
@@ -198,13 +198,12 @@ fn output_types_to_result(output_types: &[InterfaceType]) -> String {
     }
 
     format!(
-        "(result{})",
+        " (result{}) ",
         output_types
             .iter()
             .fold(String::new(), |mut accumulator, interface_type| {
                 accumulator.push(' ');
                 accumulator.push_str(&interface_type.to_string());
-                accumulator.push(' ');
                 accumulator
             })
     )
@@ -215,7 +214,7 @@ impl<'input> ToString for &Type {
     fn to_string(&self) -> String {
         match self {
             Type::Function(function_type) => format!(
-                r#"(@type (func {args} {output_types}))"#,
+                r#"(@type (func{args}{output_types}))"#,
                 args = encode_function_arguments(&function_type.arguments),
                 output_types = output_types_to_result(&function_type.output_types),
             ),