diff --git a/StructPy/cross_sections.py b/StructPy/cross_sections.py
index 6a9fdb8..0dc8629 100644
--- a/StructPy/cross_sections.py
+++ b/StructPy/cross_sections.py
@@ -276,7 +276,7 @@ def xbar(self):
 
 	@property
 	def A(self):
-		return self.B * self.H - self.b - self.h
+		return self.B * self.H - self.b * self.h
 
 	@property
 	def Ix(self):