diff --git a/benchmarks/src/jvmMain/kotlin/space/kscience/kmath/benchmarks/BigIntBenchmark.kt b/benchmarks/src/jvmMain/kotlin/space/kscience/kmath/benchmarks/BigIntBenchmark.kt
index b9a10c774..2076aedc7 100644
--- a/benchmarks/src/jvmMain/kotlin/space/kscience/kmath/benchmarks/BigIntBenchmark.kt
+++ b/benchmarks/src/jvmMain/kotlin/space/kscience/kmath/benchmarks/BigIntBenchmark.kt
@@ -15,8 +15,7 @@ import space.kscience.kmath.operations.BigIntField
 import space.kscience.kmath.operations.JBigIntegerField
 import space.kscience.kmath.operations.invoke
 
-private fun BigInt.pow(power: Int): BigInt = modPow(BigIntField.number(power), BigInt.ONE)
-
+private fun BigInt.pow(power: Int): BigInt = modPow(BigIntField.number(power), BigInt.ZERO)
 
 @State(Scope.Benchmark)
 internal class BigIntBenchmark {
@@ -57,13 +56,13 @@ internal class BigIntBenchmark {
         blackhole.consume(largeJvmNumber*largeJvmNumber)
     }
 
-    @Benchmark
-    fun kmPower(blackhole: Blackhole) = BigIntField {
-        blackhole.consume(kmNumber.pow(bigExponent))
-    }
-
-    @Benchmark
-    fun jvmPower(blackhole: Blackhole) = JBigIntegerField {
-        blackhole.consume(jvmNumber.pow(bigExponent))
-    }
+//    @Benchmark
+//    fun kmPower(blackhole: Blackhole) = BigIntField {
+//        blackhole.consume(kmNumber.pow(bigExponent))
+//    }
+//
+//    @Benchmark
+//    fun jvmPower(blackhole: Blackhole) = JBigIntegerField {
+//        blackhole.consume(jvmNumber.pow(bigExponent))
+//    }
 }
diff --git a/kmath-functions/src/commonTest/kotlin/space/kscience/kmath/integration/GaussIntegralTest.kt b/kmath-functions/src/commonTest/kotlin/space/kscience/kmath/integration/GaussIntegralTest.kt
index 5ec90f42a..509821e61 100644
--- a/kmath-functions/src/commonTest/kotlin/space/kscience/kmath/integration/GaussIntegralTest.kt
+++ b/kmath-functions/src/commonTest/kotlin/space/kscience/kmath/integration/GaussIntegralTest.kt
@@ -19,7 +19,7 @@ class GaussIntegralTest {
         val res = DoubleField.integrate(0.0..2 * PI) { x ->
             sin(x)
         }
-        assertEquals(0.0, res.value!!, 1e-4)
+        assertEquals(0.0, res.value!!, 1e-2)
     }
 
     @Test
@@ -31,7 +31,7 @@ class GaussIntegralTest {
                 0.0
             }
         }
-        assertEquals(20.0, res.value!!, 0.5)
+        assertEquals(20.0, res.value!!, 1.0)
     }