diff --git a/src/addon/java/lua/addon/luajava/CoerceLuaToJava.java b/src/addon/java/lua/addon/luajava/CoerceLuaToJava.java
index 9552b32e..b7ad9915 100644
--- a/src/addon/java/lua/addon/luajava/CoerceLuaToJava.java
+++ b/src/addon/java/lua/addon/luajava/CoerceLuaToJava.java
@@ -50,6 +50,20 @@ public class CoerceLuaToJava {
 				return 4;
 			}
 		};
+		Coercion doubleCoercion = new Coercion() {
+			public Object coerce(LValue value) {
+				return Double.valueOf( value.luaAsDouble() );
+			}
+			public int score(LValue value) {
+				if ( value instanceof LDouble )
+					return 0;
+				if ( value instanceof LNumber )
+					return 1;
+				if ( value instanceof LBoolean || value == LNil.NIL )
+					return 2;
+				return 4;
+			}
+		};
 		Coercion stringCoercion = new Coercion() {
 			public Object coerce(LValue value) {
 				return value.luaAsString();
@@ -92,6 +106,8 @@ public class CoerceLuaToJava {
 		COERCIONS.put( Integer.class, intCoercion );
 		COERCIONS.put( Long.TYPE, intCoercion );
 		COERCIONS.put( Long.class, intCoercion );
+		COERCIONS.put( Double.TYPE, doubleCoercion );
+		COERCIONS.put( Double.class, doubleCoercion );
 		COERCIONS.put( String.class, stringCoercion );
 		COERCIONS.put( Object.class, objectCoercion );
 	}
diff --git a/src/addon/java/lua/addon/luajava/LuaJava.java b/src/addon/java/lua/addon/luajava/LuaJava.java
index f9b42872..ba196e44 100644
--- a/src/addon/java/lua/addon/luajava/LuaJava.java
+++ b/src/addon/java/lua/addon/luajava/LuaJava.java
@@ -173,7 +173,6 @@ public final class LuaJava extends LFunction {
 				Object result = meth.invoke( instance, args );
 				call.stack[base] = CoerceJavaToLua.coerce(result);
 				call.top = base + 1;
-				call.adjustTop(base+nresults);
 			} catch (Exception e) {
 				throw new RuntimeException(e);
 			}
diff --git a/src/test/res/test7.lua b/src/test/res/test7.lua
index c109e778..2df50b50 100644
--- a/src/test/res/test7.lua
+++ b/src/test/res/test7.lua
@@ -9,3 +9,6 @@ print( obj:getS() )
 
 obj:setS( "World" )
 print( obj.s )
+
+math = luajava.bindClass("java.lang.Math")
+print("Square root of 9 is", math:sqrt(9.0))
diff --git a/src/test/res/test7.luac b/src/test/res/test7.luac
index 00cff7a3..9c44ac41 100644
Binary files a/src/test/res/test7.luac and b/src/test/res/test7.luac differ