diff --git a/src/link/SpirV/prune_unused.zig b/src/link/SpirV/prune_unused.zig
index 99f09a5c597a384a3ce67ba6e105126dc5ee1f2d..356da14952784938ade741ba08e5ed52fd859df3 100644
--- a/src/link/SpirV/prune_unused.zig
+++ b/src/link/SpirV/prune_unused.zig
@@ -92,9 +92,7 @@ pub fn run(parser: *BinaryModule.Parser, binary: *BinaryModule) !void {
         }
 
         // mark operands of alive function contents
-        if (!canPrune(inst.opcode)) {
-            try markAlive(parser, binary.*, inst, &alive, &id_to_index, &code_offsets, &id_offset_buf);
-        }
+        try markAlive(parser, binary.*, inst, &alive, &id_to_index, &code_offsets, &id_offset_buf);
     }
 
     // rewrite
diff --git a/test/cases/spirv_mergable_pointers.zig b/test/cases/spirv_mergable_pointers.zig
index 106ee8efbe2f1ba588ca830d7a5e67bda95d8ee3..004dcbb9dc6affdfb7247156480e0e5da9f2ced9 100644
--- a/test/cases/spirv_mergable_pointers.zig
+++ b/test/cases/spirv_mergable_pointers.zig
@@ -14,4 +14,4 @@ export fn a() void {
 // output_mode=Obj
 // backend=selfhosted
 // target=spirv64-vulkan
-// emit_bin=false
+// emit_bin=true