diff --git a/classlib/src/main/java/org/teavm/classlib/java/lang/TDouble.java b/classlib/src/main/java/org/teavm/classlib/java/lang/TDouble.java
index acdc85d15..cdd076127 100644
--- a/classlib/src/main/java/org/teavm/classlib/java/lang/TDouble.java
+++ b/classlib/src/main/java/org/teavm/classlib/java/lang/TDouble.java
@@ -233,6 +233,10 @@ public class TDouble extends TNumber implements TComparable<TDouble> {
     @Import(module = "teavm", name = "isinf")
     public static native boolean isInfinite(double v);
 
+    @JSBody(params = "v", script = "return isFinite(v);")
+    @Import(module = "teavm", name = "isfinite")
+    public static native boolean isFinite(double v);
+
     public static long doubleToRawLongBits(double value) {
         return doubleToLongBits(value);
     }
diff --git a/classlib/src/main/java/org/teavm/classlib/java/lang/TFloat.java b/classlib/src/main/java/org/teavm/classlib/java/lang/TFloat.java
index 4b2d23cc2..af2db912a 100644
--- a/classlib/src/main/java/org/teavm/classlib/java/lang/TFloat.java
+++ b/classlib/src/main/java/org/teavm/classlib/java/lang/TFloat.java
@@ -97,6 +97,10 @@ public class TFloat extends TNumber implements TComparable<TFloat> {
     @Import(module = "teavm", name = "isinf")
     public static native boolean isInfinite(float v);
 
+    @JSBody(params = "v", script = "return isFinite(v);")
+    @Import(module = "teavm", name = "isfinite")
+    public static native boolean isFinite(float v);
+
     @JSBody(script = "return NaN;")
     @Import(module = "teavm", name = "TeaVM_getNaN")
     private static native float getNaN();