diff --git a/lib/diff_output.c b/lib/diff_output.c
index 3047221..4fa8900 100644
--- a/lib/diff_output.c
+++ b/lib/diff_output.c
@@ -280,7 +280,7 @@ diff_output_match_function_prototype(char *prototype, size_t prototype_size,
 
 	if (result->left->atoms.len > 0 && cc->left.start > 0) {
 		data = result->left;
-		start_atom = &data->atoms.head[cc->left.start - 1];
+		start_atom = &data->atoms.head[cc->left.start + 3];
 	} else
 		return DIFF_RC_OK;
 
diff --git a/test/expect124.diff b/test/expect124.diff
new file mode 100644
index 0000000..2ae051a
--- /dev/null
+++ b/test/expect124.diff
@@ -0,0 +1,9 @@
+--- test124.left-p.txt
++++ test124.right-p.txt
+@@ -11,5 +11,5 @@ return_test(int test) {
+ 
+ struct testfile *
+ return_test(int test) {
+-	return NULL;
++	return test*2;
+ }
diff --git a/test/test124.left-p.txt b/test/test124.left-p.txt
new file mode 100644
index 0000000..2c57789
--- /dev/null
+++ b/test/test124.left-p.txt
@@ -0,0 +1,15 @@
+static void
+doSomethingThenPrintHello(int test)
+{
+	test = test << 4;
+	if (test % 8 == 6) {
+		return;
+	}
+
+	print("goodbye\n");
+}
+
+struct testfile *
+return_test(int test) {
+	return NULL;
+}
diff --git a/test/test124.right-p.txt b/test/test124.right-p.txt
new file mode 100644
index 0000000..9f2252e
--- /dev/null
+++ b/test/test124.right-p.txt
@@ -0,0 +1,15 @@
+static void
+doSomethingThenPrintHello(int test)
+{
+	test = test << 4;
+	if (test % 8 == 6) {
+		return;
+	}
+
+	print("goodbye\n");
+}
+
+struct testfile *
+return_test(int test) {
+	return test*2;
+}