diff --git a/src/amd/compiler/aco_optimizer.cpp b/src/amd/compiler/aco_optimizer.cpp
index ea60ad1..a2640bd 100644
--- a/src/amd/compiler/aco_optimizer.cpp
+++ b/src/amd/compiler/aco_optimizer.cpp
@@ -77,7 +77,7 @@
    bool check_literal;
 
    mad_info(aco_ptr<Instruction> instr, uint32_t id)
-   : add_instr(std::move(instr)), mul_temp_id(id), check_literal(false) {}
+   : add_instr(std::move(instr)), mul_temp_id(id), literal_idx(0), check_literal(false) {}
 };
 
 enum Label {