diff --git a/src/brevitas/proxy/float_parameter_quant.py b/src/brevitas/proxy/float_parameter_quant.py
index 0d6ffd106..1e886ee6b 100644
--- a/src/brevitas/proxy/float_parameter_quant.py
+++ b/src/brevitas/proxy/float_parameter_quant.py
@@ -67,7 +67,7 @@ def is_ocp(self):
         is_e4m3 = self.mantissa_bit_width() == 3 and self.exponent_bit_width() == 4
         is_ocp_e4m3 = is_e4m3 and self.inf_values() is None and self.nan_values() == (('111',))
 
-        is_e5m2 = self.mantissa_bit_width() == 5 and self.exponent_bit_width() == 2
+        is_e5m2 = self.mantissa_bit_width() == 2 and self.exponent_bit_width() == 5
         is_ocp_e5m2 = is_e5m2 and self.inf_values() == (
             ('00',)) and self.nan_values() == ('01', '11', '10')
 
@@ -79,7 +79,7 @@ def is_fnuz(self):
         is_fnuz_e4m3 = is_e4m3 and self.inf_values() is None and self.nan_values(
         ) is None and self.exponent_bias() == 8
 
-        is_e5m2 = self.mantissa_bit_width() == 5 and self.exponent_bit_width() == 2
+        is_e5m2 = self.mantissa_bit_width() == 2 and self.exponent_bit_width() == 5
         is_fnuz_e5m2 = is_e5m2 and self.inf_values() is None and self.nan_values(
         ) is None and self.exponent_bias() == 16
         return is_fnuz_e4m3 or is_fnuz_e5m2
diff --git a/src/brevitas/proxy/float_runtime_quant.py b/src/brevitas/proxy/float_runtime_quant.py
index 7350e5e32..d3e9edb63 100644
--- a/src/brevitas/proxy/float_runtime_quant.py
+++ b/src/brevitas/proxy/float_runtime_quant.py
@@ -49,7 +49,7 @@ def is_ocp(self):
         is_e4m3 = self.mantissa_bit_width() == 3 and self.exponent_bit_width() == 4
         is_ocp_e4m3 = is_e4m3 and self.inf_values() is None and self.nan_values() == (('111',))
 
-        is_e5m2 = self.mantissa_bit_width() == 5 and self.exponent_bit_width() == 2
+        is_e5m2 = self.mantissa_bit_width() == 2 and self.exponent_bit_width() == 5
         is_ocp_e5m2 = is_e5m2 and self.inf_values() == (
             ('00',)) and self.nan_values() == ('01', '11', '10')
 
@@ -61,7 +61,7 @@ def is_fnuz(self):
         is_fnuz_e4m3 = is_e4m3 and self.inf_values() is None and self.nan_values(
         ) is None and self.exponent_bias() == 8
 
-        is_e5m2 = self.mantissa_bit_width() == 5 and self.exponent_bit_width() == 2
+        is_e5m2 = self.mantissa_bit_width() == 2 and self.exponent_bit_width() == 5
         is_fnuz_e5m2 = is_e5m2 and self.inf_values() is None and self.nan_values(
         ) is None and self.exponent_bias() == 16
         return is_fnuz_e4m3 or is_fnuz_e5m2