diff --git a/opcomp.cc b/opcomp.cc
index 73f2499..876c6c4 100644
--- a/opcomp.cc
+++ b/opcomp.cc
@@ -728,6 +728,7 @@ void T_CompilerImpl_::processFunction(
 {
 	if ( exit ) {
 		assert( sdMain == args + lvars + 1 );
+		assert( sdFPU == 0 );
 		if ( lvars ) {
 			addInstruction( OP_POP , lvars - 1 , location );
 			sdMain -= lvars;
@@ -846,7 +847,7 @@ void T_CompilerImpl_::applyStackEffects(
 	}
 
 	if ( f ) {
-		assert( f > 0 || sdFPU >= uint32_t( -m ) );
+		assert( ( f > 0 && sdFPU + f < 8 ) || ( f < 0 && sdFPU >= uint32_t( -m ) ) );
 		sdFPU += m;
 	}
 }