diff --git a/Sources/Nimble/Matchers/BeCloseTo.swift b/Sources/Nimble/Matchers/BeCloseTo.swift
index 4a440f013..c05f967b8 100644
--- a/Sources/Nimble/Matchers/BeCloseTo.swift
+++ b/Sources/Nimble/Matchers/BeCloseTo.swift
@@ -36,60 +36,31 @@ public func beCloseTo(_ expectedValue: NMBDoubleConvertible, within delta: Doubl
 }
 
 #if canImport(Darwin)
-public class NMBObjCBeCloseToMatcher: NSObject, NMBMatcher {
-    // swiftlint:disable identifier_name
-    var _expected: NSNumber
-    var _delta: CDouble
-    // swiftlint:enable identifier_name
-    init(expected: NSNumber, within: CDouble) {
-        _expected = expected
-        _delta = within
-    }
+public class NMBObjCBeCloseToPredicate: NMBPredicate {
+    private let _expected: NSNumber
 
-    @objc public func matches(_ actualExpression: @escaping () -> NSObject?, failureMessage: FailureMessage, location: SourceLocation) -> Bool {
-        let actualBlock: () -> NMBDoubleConvertible? = ({
-            return actualExpression() as? NMBDoubleConvertible
-        })
-        let expr = Expression(expression: actualBlock, location: location)
-        let predicate = beCloseTo(self._expected, within: self._delta)
-
-        do {
-            let result = try predicate.satisfies(expr)
-            result.message.update(failureMessage: failureMessage)
-            return result.toBoolean(expectation: .toMatch)
-        } catch let error {
-            failureMessage.stringValue = "unexpected error thrown: <\(error)>"
-            return false
-        }
-    }
+    fileprivate init(expected: NSNumber, within: CDouble) {
+        _expected = expected
 
-    @objc public func doesNotMatch(_ actualExpression: @escaping () -> NSObject?, failureMessage: FailureMessage, location: SourceLocation) -> Bool {
-        let actualBlock: () -> NMBDoubleConvertible? = ({
-            return actualExpression() as? NMBDoubleConvertible
-        })
-        let expr = Expression(expression: actualBlock, location: location)
-        let predicate = beCloseTo(self._expected, within: self._delta)
-
-        do {
-            let result = try predicate.satisfies(expr)
-            result.message.update(failureMessage: failureMessage)
-            return result.toBoolean(expectation: .toNotMatch)
-        } catch let error {
-            failureMessage.stringValue = "unexpected error thrown: <\(error)>"
-            return false
+        let predicate = beCloseTo(expected, within: within)
+        let predicateBlock: PredicateBlock = { actualExpression in
+            let expr = actualExpression.cast { $0 as? NMBDoubleConvertible }
+            return try predicate.satisfies(expr).toObjectiveC()
         }
+        super.init(predicate: predicateBlock)
     }
 
-    @objc public var within: (CDouble) -> NMBObjCBeCloseToMatcher {
+    @objc public var within: (CDouble) -> NMBObjCBeCloseToPredicate {
+        let expected = _expected
         return { delta in
-            return NMBObjCBeCloseToMatcher(expected: self._expected, within: delta)
+            return NMBObjCBeCloseToPredicate(expected: expected, within: delta)
         }
     }
 }
 
-extension NMBObjCMatcher {
-    @objc public class func beCloseToMatcher(_ expected: NSNumber, within: CDouble) -> NMBObjCBeCloseToMatcher {
-        return NMBObjCBeCloseToMatcher(expected: expected, within: within)
+extension NMBPredicate {
+    @objc public class func beCloseToMatcher(_ expected: NSNumber, within: CDouble) -> NMBObjCBeCloseToPredicate {
+        return NMBObjCBeCloseToPredicate(expected: expected, within: within)
     }
 }
 #endif
diff --git a/Sources/NimbleObjectiveC/DSL.h b/Sources/NimbleObjectiveC/DSL.h
index 2adce457a..9c889895f 100644
--- a/Sources/NimbleObjectiveC/DSL.h
+++ b/Sources/NimbleObjectiveC/DSL.h
@@ -1,7 +1,7 @@
 #import <Foundation/Foundation.h>
 
 @class NMBExpectation;
-@class NMBObjCBeCloseToMatcher;
+@class NMBObjCBeCloseToPredicate;
 @class NMBObjCRaiseExceptionPredicate;
 @protocol NMBMatcher;
 
@@ -127,14 +127,14 @@ NIMBLE_EXPORT NMBExpectation *NMB_expectAction(void(^actualBlock)(void), NSStrin
 
 #define DEFINE_OVERLOAD(TYPE, EXPR) \
         NIMBLE_EXPORT_INLINE NIMBLE_OVERLOADABLE \
-        NMBObjCBeCloseToMatcher *NMB_beCloseTo(TYPE expectedValue) { \
+        NMBObjCBeCloseToPredicate *NMB_beCloseTo(TYPE expectedValue) { \
             return NMB_beCloseTo((NSNumber *)(EXPR)); \
         } \
-        NIMBLE_SHORT_OVERLOADED(NMBObjCBeCloseToMatcher *beCloseTo(TYPE expectedValue), \
+        NIMBLE_SHORT_OVERLOADED(NMBObjCBeCloseToPredicate *beCloseTo(TYPE expectedValue), \
             NMB_beCloseTo(expectedValue));
 
-    NIMBLE_EXPORT NIMBLE_OVERLOADABLE NMBObjCBeCloseToMatcher *NMB_beCloseTo(NSNumber *expectedValue);
-    NIMBLE_SHORT_OVERLOADED(NMBObjCBeCloseToMatcher *beCloseTo(NSNumber *expectedValue),
+    NIMBLE_EXPORT NIMBLE_OVERLOADABLE NMBObjCBeCloseToPredicate *NMB_beCloseTo(NSNumber *expectedValue);
+    NIMBLE_SHORT_OVERLOADED(NMBObjCBeCloseToPredicate *beCloseTo(NSNumber *expectedValue),
                             NMB_beCloseTo(expectedValue));
 
     // it would be better to only overload float & double, but zero becomes ambigious
diff --git a/Sources/NimbleObjectiveC/DSL.m b/Sources/NimbleObjectiveC/DSL.m
index 7adaca50a..7fb1c3554 100644
--- a/Sources/NimbleObjectiveC/DSL.m
+++ b/Sources/NimbleObjectiveC/DSL.m
@@ -36,8 +36,8 @@ NIMBLE_EXPORT void NMB_failWithMessage(NSString *msg, NSString *file, NSUInteger
     return [NMBPredicate beAKindOfMatcher:expectedClass];
 }
 
-NIMBLE_EXPORT NIMBLE_OVERLOADABLE NMBObjCBeCloseToMatcher *NMB_beCloseTo(NSNumber *expectedValue) {
-    return [NMBObjCMatcher beCloseToMatcher:expectedValue within:0.001];
+NIMBLE_EXPORT NIMBLE_OVERLOADABLE NMBObjCBeCloseToPredicate *NMB_beCloseTo(NSNumber *expectedValue) {
+    return [NMBPredicate beCloseToMatcher:expectedValue within:0.001];
 }
 
 NIMBLE_EXPORT id<NMBMatcher> NMB_beginWith(id itemElementOrSubstring) {