diff --git a/src/amd/llvm/ac_llvm_build.c b/src/amd/llvm/ac_llvm_build.c
index c8ad9a51e07..2460b8d3b3d 100644
--- a/src/amd/llvm/ac_llvm_build.c
+++ b/src/amd/llvm/ac_llvm_build.c
@@ -1693,7 +1693,7 @@ LLVMValueRef ac_build_umsb(struct ac_llvm_context *ctx, LLVMValueRef arg, LLVMTy
       zero = ctx->i8_0;
       break;
    default:
-      unreachable(!"invalid bitsize");
+      unreachable("invalid bitsize");
       break;
    }
 
@@ -2483,7 +2483,7 @@ LLVMValueRef ac_build_bit_count(struct ac_llvm_context *ctx, LLVMValueRef src0)
       result = LLVMBuildZExt(ctx->builder, result, ctx->i32, "");
       break;
    default:
-      unreachable(!"invalid bitsize");
+      unreachable("invalid bitsize");
       break;
    }
 
@@ -2514,7 +2514,7 @@ LLVMValueRef ac_build_bitfield_reverse(struct ac_llvm_context *ctx, LLVMValueRef
       result = LLVMBuildZExt(ctx->builder, result, ctx->i32, "");
       break;
    default:
-      unreachable(!"invalid bitsize");
+      unreachable("invalid bitsize");
       break;
    }
 
@@ -2595,7 +2595,7 @@ LLVMValueRef ac_find_lsb(struct ac_llvm_context *ctx, LLVMTypeRef dst_type, LLVM
       zero = ctx->i8_0;
       break;
    default:
-      unreachable(!"invalid bitsize");
+      unreachable("invalid bitsize");
    }
 
    LLVMValueRef params[2] = {
diff --git a/src/gallium/drivers/r600/sfn/sfn_nir_lower_64bit.cpp b/src/gallium/drivers/r600/sfn/sfn_nir_lower_64bit.cpp
index 8fe0b604918..6a79cf3ed5b 100644
--- a/src/gallium/drivers/r600/sfn/sfn_nir_lower_64bit.cpp
+++ b/src/gallium/drivers/r600/sfn/sfn_nir_lower_64bit.cpp
@@ -383,7 +383,7 @@ LowerSplit64BitVar::split_double_load_deref(nir_intrinsic_instr *intr)
    else if (deref->deref_type == nir_deref_type_array)
       return split_load_deref_array(intr, deref->arr.index);
    else {
-      unreachable(0 && "only splitting of loads from vars and arrays is supported");
+      unreachable("only splitting of loads from vars and arrays is supported");
    }
    m_old_stores.push_back(&intr->instr);
 }