diff --git a/src/libraries/System.Globalization/tests/CompareInfo/CompareInfoTests.IndexOf.cs b/src/libraries/System.Globalization/tests/CompareInfo/CompareInfoTests.IndexOf.cs
index fa12fb9cec5604..58d66e93be6d67 100644
--- a/src/libraries/System.Globalization/tests/CompareInfo/CompareInfoTests.IndexOf.cs
+++ b/src/libraries/System.Globalization/tests/CompareInfo/CompareInfoTests.IndexOf.cs
@@ -183,7 +183,6 @@ public static IEnumerable<object[]> IndexOf_U_WithDiaeresis_TestData()
         [MemberData(nameof(IndexOf_TestData))]
         [MemberData(nameof(IndexOf_Aesc_Ligature_TestData))]
         [MemberData(nameof(IndexOf_U_WithDiaeresis_TestData))]
-        [ActiveIssue("https://github.com/dotnet/runtime/issues/74179", TestRuntimes.Mono)]
         public void IndexOf_String(CompareInfo compareInfo, string source, string value, int startIndex, int count, CompareOptions options, int expected, int expectedMatchLength)
         {
             if (value.Length == 1)
diff --git a/src/libraries/System.Globalization/tests/Invariant/InvariantMode.cs b/src/libraries/System.Globalization/tests/Invariant/InvariantMode.cs
index 8416d0e3f7bdb6..361c39ec4272b8 100644
--- a/src/libraries/System.Globalization/tests/Invariant/InvariantMode.cs
+++ b/src/libraries/System.Globalization/tests/Invariant/InvariantMode.cs
@@ -864,7 +864,6 @@ private static StringComparison GetStringComparison(CompareOptions options)
 
         [ConditionalTheory(nameof(PredefinedCulturesOnlyIsDisabled))]
         [MemberData(nameof(IndexOf_TestData))]
-        [ActiveIssue("https://github.com/dotnet/runtime/issues/74179", TestRuntimes.Mono)]
         public void TestIndexOf(string source, string value, int startIndex, int count, CompareOptions options, int result)
         {
             foreach (string cul in s_cultureNames)
@@ -912,7 +911,6 @@ static void TestCore(CompareInfo compareInfo, string source, string value, int s
 
         [ConditionalTheory(nameof(PredefinedCulturesOnlyIsDisabled))]
         [MemberData(nameof(LastIndexOf_TestData))]
-        [ActiveIssue("https://github.com/dotnet/runtime/issues/74179", TestRuntimes.Mono)]
         public void TestLastIndexOf(string source, string value, int startIndex, int count, CompareOptions options, int result)
         {
             foreach (string cul in s_cultureNames)
diff --git a/src/libraries/System.Private.CoreLib/src/System/SpanHelpers.T.cs b/src/libraries/System.Private.CoreLib/src/System/SpanHelpers.T.cs
index b093cb11a29e6d..877c21311876d5 100644
--- a/src/libraries/System.Private.CoreLib/src/System/SpanHelpers.T.cs
+++ b/src/libraries/System.Private.CoreLib/src/System/SpanHelpers.T.cs
@@ -1498,7 +1498,7 @@ private static int IndexOfValueType<TValue, TNegator>(ref TValue searchSpace, TV
                 {
                     length -= 1;
 
-                    if (TNegator.NegateIfNeeded(Unsafe.Add(ref searchSpace, offset).Equals(value))) return (int)offset;
+                    if (TNegator.NegateIfNeeded(Unsafe.Add(ref searchSpace, offset) == value)) return (int)offset;
 
                     offset += 1;
                 }
@@ -2145,7 +2145,7 @@ private static int LastIndexOfValueType<TValue, TNegator>(ref TValue searchSpace
                 {
                     length -= 1;
 
-                    if (TNegator.NegateIfNeeded(Unsafe.Add(ref searchSpace, offset).Equals(value))) return (int)offset;
+                    if (TNegator.NegateIfNeeded(Unsafe.Add(ref searchSpace, offset) == value)) return (int)offset;
 
                     offset -= 1;
                 }