diff --git a/kmath-asm/src/main/kotlin/scientifik/kmath/expressions/asm/AsmGenerationContext.kt b/kmath-asm/src/main/kotlin/scientifik/kmath/expressions/asm/AsmGenerationContext.kt
index 0375b7fc4..92663ba8f 100644
--- a/kmath-asm/src/main/kotlin/scientifik/kmath/expressions/asm/AsmGenerationContext.kt
+++ b/kmath-asm/src/main/kotlin/scientifik/kmath/expressions/asm/AsmGenerationContext.kt
@@ -215,7 +215,7 @@ class AsmGenerationContext<T>(
         visitLoadAnyFromConstants(value, c)
     }
 
-    internal fun visitLoadFromVariables(name: String, defaultValue: T? = null) = invokeMethodVisitor.run {
+    internal fun visitLoadFromVariables(name: String, defaultValue: T? = null): Unit = invokeMethodVisitor.run {
         maxStack += 2
         visitVarInsn(Opcodes.ALOAD, invokeArgumentsVar)
 
@@ -241,6 +241,7 @@ class AsmGenerationContext<T>(
     }
 
     internal fun visitLoadAlgebra() {
+        maxStack++
         invokeMethodVisitor.visitVarInsn(Opcodes.ALOAD, invokeThisVar)
 
         invokeMethodVisitor.visitFieldInsn(
diff --git a/kmath-asm/src/test/kotlin/scientifik/kmath/expressions/AsmTest.kt b/kmath-asm/src/test/kotlin/scientifik/kmath/expressions/AsmTest.kt
index 55c240cef..93c52faac 100644
--- a/kmath-asm/src/test/kotlin/scientifik/kmath/expressions/AsmTest.kt
+++ b/kmath-asm/src/test/kotlin/scientifik/kmath/expressions/AsmTest.kt
@@ -3,6 +3,8 @@ package scientifik.kmath.expressions
 import scientifik.kmath.expressions.asm.AsmExpression
 import scientifik.kmath.expressions.asm.AsmExpressionField
 import scientifik.kmath.expressions.asm.asmField
+import scientifik.kmath.expressions.asm.asmRing
+import scientifik.kmath.operations.IntRing
 import scientifik.kmath.operations.RealField
 import kotlin.test.Test
 import kotlin.test.assertEquals
@@ -15,26 +17,29 @@ class AsmTest {
     ): Unit = assertEquals(expected = expected, actual = asmField(RealField, block)(arguments))
 
     @Test
-    fun testConstantsSum() = testDoubleExpression(16.0) { const(8.0) + 8.0 }
+    fun testConstantsSum(): Unit = testDoubleExpression(16.0) { const(8.0) + 8.0 }
 
     @Test
-    fun testVarsSum() = testDoubleExpression(1000.0, mapOf("x" to 500.0)) { variable("x") + 500.0 }
+    fun testVarsSum(): Unit = testDoubleExpression(1000.0, mapOf("x" to 500.0)) { variable("x") + 500.0 }
 
     @Test
-    fun testProduct() = testDoubleExpression(24.0) { const(4.0) * const(6.0) }
+    fun testProduct(): Unit = testDoubleExpression(24.0) { const(4.0) * const(6.0) }
 
     @Test
-    fun testConstantProduct() = testDoubleExpression(984.0) { const(8.0) * 123 }
+    fun testConstantProduct(): Unit = testDoubleExpression(984.0) { const(8.0) * 123 }
 
     @Test
-    fun testSubtraction() = testDoubleExpression(2.0) { const(4.0) - 2.0 }
+    fun testVarsConstantProductVar(): Unit = testDoubleExpression(984.0, mapOf("x" to 8.0)) { variable("x") * 123 }
 
     @Test
-    fun testDivision() = testDoubleExpression(64.0) { const(128.0) / 2 }
+    fun testSubtraction(): Unit = testDoubleExpression(2.0) { const(4.0) - 2.0 }
 
     @Test
-    fun testDirectCall() = testDoubleExpression(4096.0) { binaryOperation("*", const(64.0), const(64.0)) }
+    fun testDivision(): Unit = testDoubleExpression(64.0) { const(128.0) / 2 }
 
-//    @Test
-//    fun testSine() = testDoubleExpression(0.0) { unaryOperation("sin", const(PI)) }
+    @Test
+    fun testDirectUnaryCall(): Unit = testDoubleExpression(64.0) { unaryOperation("+", const(64.0)) }
+
+    @Test
+    fun testDirectBinaryCall(): Unit = testDoubleExpression(4096.0) { binaryOperation("*", const(64.0), const(64.0)) }
 }