diff --git a/library/init/core.lean b/library/init/core.lean
index 0cc29d6b89..f6e979e3b6 100644
--- a/library/init/core.lean
+++ b/library/init/core.lean
@@ -601,6 +601,9 @@ prefix ! := not
 infix || := or
 infix && := and
 
+@[inlineIfReduce] def strictOr  (b₁ b₂ : Bool) := b₁ || b₂
+@[inlineIfReduce] def strictAnd (b₁ b₂ : Bool) := b₁ && b₂
+
 @[inline] def bne {α : Type u} [HasBeq α] (a b : α) : Bool :=
 !(a == b)
 
diff --git a/tests/playground/parser.lean b/tests/playground/parser.lean
index c99e268e9b..267fe2ded4 100644
--- a/tests/playground/parser.lean
+++ b/tests/playground/parser.lean
@@ -42,9 +42,6 @@ p s (mkInput 0 st bst)
   | ⟨Result.ok _ it st bst _, h⟩ := Result.ok a it st bst true
   | ⟨Result.error _ _ _ _ _, h⟩  := unreachableError h
 
-@[inlineIfReduce] def strictOr  (b₁ b₂ : Bool) := b₁ || b₂
-@[inlineIfReduce] def strictAnd (b₁ b₂ : Bool) := b₁ && b₂
-
 @[inline] def parserM.bind (x : parserM σ δ μ α) (f : α → parserM σ δ μ β) : parserM σ δ μ β :=
 λ str inp,
   match x str inp with