diff --git a/sbe-tool/src/main/java/uk/co/real_logic/sbe/generation/rust/RustGenerator.java b/sbe-tool/src/main/java/uk/co/real_logic/sbe/generation/rust/RustGenerator.java
index 0efc5f97f..d56c680d2 100644
--- a/sbe-tool/src/main/java/uk/co/real_logic/sbe/generation/rust/RustGenerator.java
+++ b/sbe-tool/src/main/java/uk/co/real_logic/sbe/generation/rust/RustGenerator.java
@@ -459,8 +459,7 @@ private static void generatePrimitiveArrayEncoder(
 
         if (primitiveType.size() == 1)
         {
-            indent(sb, level + 1, "buf.put_%s_at(offset + index, value);\n",
-                rustPrimitiveType, primitiveType.size());
+            indent(sb, level + 1, "buf.put_%s_at(offset + index, value);\n", rustPrimitiveType);
         }
         else
         {