diff --git a/jode/jode/expr/ConstOperator.java b/jode/jode/expr/ConstOperator.java
index ccfcac8..9cfcb9b 100644
--- a/jode/jode/expr/ConstOperator.java
+++ b/jode/jode/expr/ConstOperator.java
@@ -85,13 +85,13 @@ public class ConstOperator extends NoArgOperator {
 		    && ((Integer)value).intValue() == 1);
 	} else if (type == Type.tLong) {
 	    return (value instanceof Long
-		    && ((Integer)value).longValue() == 1L);
+		    && ((Long)value).longValue() == 1L);
 	} else if (type == Type.tFloat) {
 	    return (value instanceof Float
-		    && ((Integer)value).floatValue() == 1.0f);
+		    && ((Float)value).floatValue() == 1.0f);
 	} else if (type == Type.tDouble) {
 	    return (value instanceof Double
-		    && ((Integer)value).doubleValue() == 1.0);
+		    && ((Double)value).doubleValue() == 1.0);
 	}
 	return false;
     }
diff --git a/jode/jode/expr/InvokeOperator.java.in b/jode/jode/expr/InvokeOperator.java.in
index d0d13c4..4ecd8fd 100644
--- a/jode/jode/expr/InvokeOperator.java.in
+++ b/jode/jode/expr/InvokeOperator.java.in
@@ -447,14 +447,20 @@ public final class InvokeOperator extends Operator
 	    result = (String) interpreter.interpretMethod
 		(ma.getBytecodeInfo(), null, new Object[] { op.getValue() });
 	} catch (InterpreterException ex) {
-	    GlobalOptions.err.println("Warning: Can't interpret method "
-				      +methodName);
-	    ex.printStackTrace(GlobalOptions.err);
+	    if ((GlobalOptions.debuggingFlags & 
+		 GlobalOptions.DEBUG_INTERPRT) != 0) {
+		GlobalOptions.err.println("Warning: Can't interpret method "
+					  +methodName);
+		ex.printStackTrace(GlobalOptions.err);
+	    }
 	    return null;
 	} catch (InvocationTargetException ex) {
-	    GlobalOptions.err.println("Warning: Interpreted method throws"
-				      +" an uncaught exception: ");
-	    ex.getTargetException().printStackTrace(GlobalOptions.err);
+	    if ((GlobalOptions.debuggingFlags & 
+		 GlobalOptions.DEBUG_INTERPRT) != 0) {
+		GlobalOptions.err.println("Warning: Interpreted method throws"
+					  +" an uncaught exception: ");
+		ex.getTargetException().printStackTrace(GlobalOptions.err);
+	    }
 	    return null;
 	}
 	return new ConstOperator(result);
diff --git a/jode/jode/expr/Makefile.am b/jode/jode/expr/Makefile.am
index 4cb258a..93dc60a 100644
--- a/jode/jode/expr/Makefile.am
+++ b/jode/jode/expr/Makefile.am
@@ -8,7 +8,7 @@ JAVADEP = $(top_builddir)/javaDependencies.pl -subdir=$(subdir)\
 CLASSPATH = @CLASSPATH@
 CLASSLIB = @CLASSLIB@
 SUBSTCP = @SUBSTCP@
-BUILD_CLASSPATH = $(top_srcdir):$(top_builddir):$(CLASSPATH):$(CLASSLIB)
+FULL_CLASSPATH := $(shell $(SUBSTCP) $(top_srcdir):$(top_builddir):$(CLASSPATH):$(CLASSLIB))
 
 MY_JAVA_FILES = \
   ArrayLengthOperator.java \
@@ -61,7 +61,7 @@ EXTRA_DIST = $(MY_JAVA_FILES)
 @QUOTE@-include Makefile.dep
 
 %.class: %.java
-	$(JAVAC) -classpath `$(SUBSTCP) $(BUILD_CLASSPATH):$(CLASSLIB)` -d $(top_builddir) $<
+	$(JAVAC) -classpath $(FULL_CLASSPATH) -d $(top_builddir) $<
 
 Makefile.dep: $(MY_JAVA_FILES:.java=.class)
 	$(JAVADEP) $^