diff --git a/AlgebraicDataflowArchitectureModel/src/tests/NumberUtilTest.java b/AlgebraicDataflowArchitectureModel/src/tests/NumberUtilTest.java
index bc12d93..45df159 100644
--- a/AlgebraicDataflowArchitectureModel/src/tests/NumberUtilTest.java
+++ b/AlgebraicDataflowArchitectureModel/src/tests/NumberUtilTest.java
@@ -16,6 +16,7 @@
 		assertTrue("Hex with long suffix (L)", NumberUtil.isHexNumber("0x123L"));
 		assertTrue("Hex with long suffix (l)", NumberUtil.isHexNumber("0x123l"));
 		assertTrue("Minimum valid hex", NumberUtil.isHexNumber("0x0"));
+		assertTrue("Successive underscores", NumberUtil.isHexNumber("0x123__456"));
 		
 		// --- Invalid format numbers ---
 		// Null and empty
@@ -36,7 +37,6 @@
 		assertFalse("Underscore immediately after prefix", NumberUtil.isHexNumber("0x_123"));
 		assertFalse("Trailing underscore", NumberUtil.isHexNumber("0x123_"));
 		assertFalse("Trailing underscore with L", NumberUtil.isHexNumber("0x123_L"));
-		assertFalse("Successive underscores", NumberUtil.isHexNumber("0x123__456"));
 		
 		// Long suffix rules
 		assertFalse("L in middle", NumberUtil.isHexNumber("0x1L2"));
@@ -56,6 +56,7 @@
 		assertTrue("Binary with long suffix (L)", NumberUtil.isBinaryNumber("0b101L"));
 		assertTrue("Binary with long suffix (l)", NumberUtil.isBinaryNumber("0b110l"));
 		assertTrue("Minimum valid binary", NumberUtil.isBinaryNumber("0b0"));
+		assertTrue("Successive underscores", NumberUtil.isBinaryNumber("0b101__010"));
 		
 		// --- Invalid format numbers ---
 		// Null and empty
@@ -77,7 +78,6 @@
 		assertFalse("Underscore immediately after prefix", NumberUtil.isBinaryNumber("0b_101"));
 		assertFalse("Trailing underscore", NumberUtil.isBinaryNumber("0b101_"));
 		assertFalse("Trailing underscore with L", NumberUtil.isBinaryNumber("0b101_L"));
-		assertFalse("Successive underscores", NumberUtil.isHexNumber("0b101__010"));
 		
 		// Long suffix rules
 		assertFalse("L in middle", NumberUtil.isBinaryNumber("0b1L0"));