diff --git a/_test/composite11.go b/_test/composite11.go
new file mode 100644
index 000000000..85f710182
--- /dev/null
+++ b/_test/composite11.go
@@ -0,0 +1,15 @@
+package main
+
+import (
+	"fmt"
+	"image/color"
+)
+
+func main() {
+	c := color.NRGBA64{1, 1, 1, 1}
+
+	fmt.Println(c)
+}
+
+// Output:
+// {1 1 1 1}
diff --git a/interp/run.go b/interp/run.go
index b70afa92b..a85206d8a 100644
--- a/interp/run.go
+++ b/interp/run.go
@@ -2011,10 +2011,11 @@ func compositeBinStruct(n *node) {
 			}
 		} else {
 			fieldIndex[i] = []int{i}
-			convertLiteralValue(c.child[1], typ.Field(i).Type)
 			if c.typ.cat == funcT {
+				convertLiteralValue(c.child[1], typ.Field(i).Type)
 				values[i] = genFunctionWrapper(c.child[1])
 			} else {
+				convertLiteralValue(c, typ.Field(i).Type)
 				values[i] = genValue(c)
 			}
 		}