diff --git a/astgen.c b/astgen.c
index 997e6d4707..eb6afddd36 100644
--- a/astgen.c
+++ b/astgen.c
@@ -7453,9 +7453,10 @@ static void fnDecl(AstGenCtx* ag, GenZir* gz, uint32_t* wip_decl_insts,
     }
     free(ret_body);
 
-    // break_inline returning func to declaration
-    // (AstGen.zig:4495).
-    makeBreakInline(&decl_gz, decl_inst, func_ref, AST_NODE_OFFSET_NONE);
+    // break_inline returning func to declaration (AstGen.zig:4495).
+    // nodeIndexToRelative(decl_node) = node - decl_gz.decl_node_index.
+    makeBreakInline(
+        &decl_gz, decl_inst, func_ref, (int32_t)node - (int32_t)proto_node);
 
     // setDeclaration (AstGen.zig:4208-4225).
     DeclFlagsId decl_id