diff --git a/modules/gdscript/tests/scripts/parser/errors/dollar-assignment-bug-53696.gd b/modules/gdscript/tests/scripts/parser/errors/dollar_assignment_bug_53696.gd similarity index 100% rename from modules/gdscript/tests/scripts/parser/errors/dollar-assignment-bug-53696.gd rename to modules/gdscript/tests/scripts/parser/errors/dollar_assignment_bug_53696.gd diff --git a/modules/gdscript/tests/scripts/parser/errors/dollar-assignment-bug-53696.out b/modules/gdscript/tests/scripts/parser/errors/dollar_assignment_bug_53696.out similarity index 100% rename from modules/gdscript/tests/scripts/parser/errors/dollar-assignment-bug-53696.out rename to modules/gdscript/tests/scripts/parser/errors/dollar_assignment_bug_53696.out diff --git a/modules/gdscript/tests/scripts/runtime/features/compare-builtin-equals-null.gd b/modules/gdscript/tests/scripts/runtime/features/compare_builtin_equals_null.gd similarity index 100% rename from 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modules/gdscript/tests/scripts/runtime/features/compare-null-equals-builtin.out rename to modules/gdscript/tests/scripts/runtime/features/compare_null_equals_builtin.out diff --git a/modules/gdscript/tests/scripts/runtime/features/compare-null-not-equals-builtin.gd b/modules/gdscript/tests/scripts/runtime/features/compare_null_not_equals_builtin.gd similarity index 100% rename from modules/gdscript/tests/scripts/runtime/features/compare-null-not-equals-builtin.gd rename to modules/gdscript/tests/scripts/runtime/features/compare_null_not_equals_builtin.gd diff --git a/modules/gdscript/tests/scripts/runtime/features/compare-null-not-equals-builtin.out b/modules/gdscript/tests/scripts/runtime/features/compare_null_not_equals_builtin.out similarity index 100% rename from modules/gdscript/tests/scripts/runtime/features/compare-null-not-equals-builtin.out rename to modules/gdscript/tests/scripts/runtime/features/compare_null_not_equals_builtin.out diff --git 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