diff --git a/neo/ui/RegExp.h b/neo/ui/RegExp.h
index 4cb0ae2f..6a7907d4 100644
--- a/neo/ui/RegExp.h
+++ b/neo/ui/RegExp.h
@@ -58,6 +58,11 @@ public:
 };
 
 ID_INLINE idRegister::idRegister( void ) {
+	enabled = false;
+	type = -1;
+	regCount = 0;
+	memset(regs, 0, sizeof(regs));
+	var = NULL;
 }
 
 ID_INLINE idRegister::idRegister( const char *p, int t ) {
@@ -65,6 +70,7 @@ ID_INLINE idRegister::idRegister( const char *p, int t ) {
 	type = t;
 	assert( t >= 0 && t < NUMTYPES );
 	regCount = REGCOUNT[t];
+	memset(regs, 0, sizeof(regs));
 	enabled = ( type == STRING ) ? false : true;
 	var = NULL;
 };