diff --git a/src/tint/fuzzers/tint_common_fuzzer.cc b/src/tint/fuzzers/tint_common_fuzzer.cc
index 15ab7d8b69..11cdf76e6c 100644
--- a/src/tint/fuzzers/tint_common_fuzzer.cc
+++ b/src/tint/fuzzers/tint_common_fuzzer.cc
@@ -149,8 +149,8 @@ int CommonFuzzer::Run(const uint8_t* data, size_t size) {
 #endif
 
     switch (input_) {
-#if TINT_BUILD_WGSL_READER
         case InputFormat::kWGSL: {
+#if TINT_BUILD_WGSL_READER
             // Clear any existing diagnostics, as these will hold pointers to file_,
             // which we are about to release.
             diagnostics_ = {};
@@ -160,11 +160,12 @@ int CommonFuzzer::Run(const uint8_t* data, size_t size) {
                 dump_input_data(str, ".wgsl");
             }
             program = reader::wgsl::Parse(file_.get());
+#endif  // TINT_BUILD_WGSL_READER
             break;
         }
-#endif  // TINT_BUILD_WGSL_READER
-#if TINT_BUILD_SPV_READER
+
         case InputFormat::kSpv: {
+#if TINT_BUILD_SPV_READER
             // `spirv_input` has been initialized with the capacity to store `size /
             // sizeof(uint32_t)` uint32_t values. If `size` is not a multiple of
             // sizeof(uint32_t) then not all of `data` can be copied into
@@ -177,9 +178,9 @@ int CommonFuzzer::Run(const uint8_t* data, size_t size) {
                 dump_input_data(spirv_input, ".spv");
             }
             program = reader::spirv::Parse(spirv_input);
+#endif  // TINT_BUILD_SPV_READER
             break;
         }
-#endif  // TINT_BUILD_SPV_READER
     }
 
     if (!program.IsValid()) {
diff --git a/src/tint/reader/spirv/parser_impl.h b/src/tint/reader/spirv/parser_impl.h
index 9ff9033b28..7713734faf 100644
--- a/src/tint/reader/spirv/parser_impl.h
+++ b/src/tint/reader/spirv/parser_impl.h
@@ -25,7 +25,6 @@
 #include "src/tint/utils/compiler_macros.h"
 #include "src/tint/utils/hashmap.h"
 
-#if TINT_BUILD_SPV_READER
 TINT_BEGIN_DISABLE_WARNING(NEWLINE_EOF);
 TINT_BEGIN_DISABLE_WARNING(OLD_STYLE_CAST);
 TINT_BEGIN_DISABLE_WARNING(SIGN_CONVERSION);
@@ -35,7 +34,6 @@ TINT_END_DISABLE_WARNING(WEAK_VTABLES);
 TINT_END_DISABLE_WARNING(SIGN_CONVERSION);
 TINT_END_DISABLE_WARNING(OLD_STYLE_CAST);
 TINT_END_DISABLE_WARNING(NEWLINE_EOF);
-#endif
 
 #include "src/tint/program_builder.h"
 #include "src/tint/reader/reader.h"
diff --git a/src/tint/reader/spirv/parser_impl_test_helper.h b/src/tint/reader/spirv/parser_impl_test_helper.h
index d1b0e35f84..ea0e37e483 100644
--- a/src/tint/reader/spirv/parser_impl_test_helper.h
+++ b/src/tint/reader/spirv/parser_impl_test_helper.h
@@ -23,7 +23,6 @@
 
 #include "src/tint/utils/compiler_macros.h"
 
-#if TINT_BUILD_SPV_READER
 TINT_BEGIN_DISABLE_WARNING(NEWLINE_EOF);
 TINT_BEGIN_DISABLE_WARNING(OLD_STYLE_CAST);
 TINT_BEGIN_DISABLE_WARNING(SIGN_CONVERSION);
@@ -33,7 +32,6 @@ TINT_END_DISABLE_WARNING(WEAK_VTABLES);
 TINT_END_DISABLE_WARNING(SIGN_CONVERSION);
 TINT_END_DISABLE_WARNING(OLD_STYLE_CAST);
 TINT_END_DISABLE_WARNING(NEWLINE_EOF);
-#endif
 
 #include "gtest/gtest.h"
 #include "src/tint/demangler.h"