diff --git a/lib/frontend/src/frontend.rs b/lib/frontend/src/frontend.rs
index 9ae7cfe0fb..6dab86b245 100644
--- a/lib/frontend/src/frontend.rs
+++ b/lib/frontend/src/frontend.rs
@@ -266,7 +266,7 @@ where
     /// When inserting the terminator instruction (which doesn't have a falltrough to its immediate
     /// successor), the block will be declared filled and it will not be possible to append
     /// instructions to it.
-    pub fn switch_to_block(&mut self, ebb: Ebb, jump_args: &[Value]) -> &[Value] {
+    pub fn switch_to_block(&mut self, ebb: Ebb) {
         if !self.params_values_initialized {
             self.fill_function_params_values(ebb);
         }
@@ -286,8 +286,6 @@ where
         let basic_block = self.builder.ssa.header_block(ebb);
         // Then we change the cursor position.
         self.position = Position { ebb, basic_block };
-        self.ebb_params_adjustment(ebb, jump_args);
-        self.func.dfg.ebb_params(ebb)
     }
 
     /// Declares that all the predecessors of this block are known.
@@ -706,7 +704,7 @@ mod tests {
             builder.declare_var(y, I32);
             builder.declare_var(z, I32);
 
-            builder.switch_to_block(block0, &[]);
+            builder.switch_to_block(block0);
             if !lazy_seal {
                 builder.seal_block(block0);
             }
@@ -726,7 +724,7 @@ mod tests {
             }
             builder.ins().jump(block1, &[]);
 
-            builder.switch_to_block(block1, &[]);
+            builder.switch_to_block(block1);
             {
                 let arg1 = builder.use_var(y);
                 let arg2 = builder.use_var(z);
@@ -748,7 +746,7 @@ mod tests {
                 builder.ins().return_(&[arg]);
             }
 
-            builder.switch_to_block(block2, &[]);
+            builder.switch_to_block(block2);
             if !lazy_seal {
                 builder.seal_block(block2);
             }
diff --git a/lib/frontend/src/lib.rs b/lib/frontend/src/lib.rs
index 6e10d6481a..9b23e80a66 100644
--- a/lib/frontend/src/lib.rs
+++ b/lib/frontend/src/lib.rs
@@ -76,7 +76,7 @@
 //!         builder.declare_var(y, I32);
 //!         builder.declare_var(z, I32);
 //!
-//!         builder.switch_to_block(block0, &[]);
+//!         builder.switch_to_block(block0);
 //!         builder.seal_block(block0);
 //!         {
 //!             let tmp = builder.param_value(0);
@@ -94,7 +94,7 @@
 //!         }
 //!         builder.ins().jump(block1, &[]);
 //!
-//!         builder.switch_to_block(block1, &[]);
+//!         builder.switch_to_block(block1);
 //!         {
 //!             let arg1 = builder.use_var(y);
 //!             let arg2 = builder.use_var(z);
@@ -116,7 +116,7 @@
 //!             builder.ins().return_(&[arg]);
 //!         }
 //!
-//!         builder.switch_to_block(block2, &[]);
+//!         builder.switch_to_block(block2);
 //!         builder.seal_block(block2);
 //!
 //!         {
diff --git a/lib/wasm/src/code_translator.rs b/lib/wasm/src/code_translator.rs
index d74bbbc688..040a53fe5d 100644
--- a/lib/wasm/src/code_translator.rs
+++ b/lib/wasm/src/code_translator.rs
@@ -133,7 +133,7 @@ pub fn translate_operator<FE: FuncEnvironment + ?Sized>(
             }
             builder.ins().jump(loop_body, &[]);
             state.push_loop(loop_body, next, num_return_values(ty));
-            builder.switch_to_block(loop_body, &[]);
+            builder.switch_to_block(loop_body);
         }
         Operator::If { ty } => {
             let val = state.pop1();
@@ -170,7 +170,7 @@ pub fn translate_operator<FE: FuncEnvironment + ?Sized>(
             let else_ebb = builder.create_ebb();
             builder.change_jump_destination(branch_inst, else_ebb);
             builder.seal_block(else_ebb);
-            builder.switch_to_block(else_ebb, &[]);
+            builder.switch_to_block(else_ebb);
         }
         Operator::End => {
             let frame = state.control_stack.pop().unwrap();
@@ -181,7 +181,7 @@ pub fn translate_operator<FE: FuncEnvironment + ?Sized>(
                     state.peekn(return_count),
                 );
             }
-            builder.switch_to_block(frame.following_code(), state.peekn(return_count));
+            builder.switch_to_block(frame.following_code());
             builder.seal_block(frame.following_code());
             // If it is a loop we also have to seal the body loop block
             match frame {
@@ -316,7 +316,7 @@ pub fn translate_operator<FE: FuncEnvironment + ?Sized>(
                     .br_destination();
                 builder.ins().jump(default_ebb, state.peekn(return_count));
                 for (depth, dest_ebb) in dest_ebbs {
-                    builder.switch_to_block(dest_ebb, &[]);
+                    builder.switch_to_block(dest_ebb);
                     builder.seal_block(dest_ebb);
                     let i = state.control_stack.len() - 1 - depth;
                     let real_dest_ebb = {
@@ -856,7 +856,7 @@ fn translate_unreachable_operator(
                 // a jump instruction since the code is still unreachable
                 let frame = control_stack.pop().unwrap();
 
-                builder.switch_to_block(frame.following_code(), &[]);
+                builder.switch_to_block(frame.following_code());
                 builder.seal_block(frame.following_code());
                 match frame {
                     // If it is a loop we also have to seal the body loop block
@@ -900,7 +900,7 @@ fn translate_unreachable_operator(
                 let else_ebb = builder.create_ebb();
                 builder.change_jump_destination(branch_inst, else_ebb);
                 builder.seal_block(else_ebb);
-                builder.switch_to_block(else_ebb, &[]);
+                builder.switch_to_block(else_ebb);
                 // Now we have to split off the stack the values not used
                 // by unreachable code that hasn't been translated
                 stack.truncate(original_stack_size);
diff --git a/lib/wasm/src/func_translator.rs b/lib/wasm/src/func_translator.rs
index aad791c9ac..acdd400a8f 100644
--- a/lib/wasm/src/func_translator.rs
+++ b/lib/wasm/src/func_translator.rs
@@ -82,7 +82,7 @@ impl FuncTranslator {
         // This clears the `ILBuilder`.
         let mut builder = FunctionBuilder::new(func, &mut self.il_builder);
         let entry_block = builder.create_ebb();
-        builder.switch_to_block(entry_block, &[]); // This also creates values for the arguments.
+        builder.switch_to_block(entry_block); // This also creates values for the arguments.
         builder.seal_block(entry_block);
         // Make sure the entry block is inserted in the layout before we make any callbacks to
         // `environ`. The callback functions may need to insert things in the entry block.