diff --git a/python/trezorlib/eos.py b/python/trezorlib/eos.py
index 985aa4924..5227db34e 100644
--- a/python/trezorlib/eos.py
+++ b/python/trezorlib/eos.py
@@ -284,7 +284,7 @@ def parse_transaction_json(transaction):
     )
     header.ref_block_num = int(transaction["ref_block_num"])
     header.ref_block_prefix = int(transaction["ref_block_prefix"])
-    header.max_net_usage_words = int(transaction["net_usage_words"])
+    header.max_net_usage_words = int(transaction["max_net_usage_words"])
     header.max_cpu_usage_ms = int(transaction["max_cpu_usage_ms"])
     header.delay_sec = int(transaction["delay_sec"])
 
diff --git a/python/trezorlib/tests/device_tests/test_msg_eos_signtx.py b/python/trezorlib/tests/device_tests/test_msg_eos_signtx.py
index f913569a4..41892d1e7 100644
--- a/python/trezorlib/tests/device_tests/test_msg_eos_signtx.py
+++ b/python/trezorlib/tests/device_tests/test_msg_eos_signtx.py
@@ -51,7 +51,7 @@ class TestMsgEosSignTx(TrezorTest):
             "expiration": "2018-07-14T10:43:28",
             "ref_block_num": 6439,
             "ref_block_prefix": 2995713264,
-            "net_usage_words": 0,
+            "max_net_usage_words": 0,
             "max_cpu_usage_ms": 0,
             "delay_sec": 0,
             "context_free_actions": [],
@@ -94,7 +94,7 @@ class TestMsgEosSignTx(TrezorTest):
             "expiration": "2018-07-14T10:43:28",
             "ref_block_num": 6439,
             "ref_block_prefix": 2995713264,
-            "net_usage_words": 0,
+            "max_net_usage_words": 0,
             "max_cpu_usage_ms": 0,
             "delay_sec": 0,
             "context_free_actions": [],
@@ -136,7 +136,7 @@ class TestMsgEosSignTx(TrezorTest):
             "expiration": "2018-07-14T10:43:28",
             "ref_block_num": 6439,
             "ref_block_prefix": 2995713264,
-            "net_usage_words": 0,
+            "max_net_usage_words": 0,
             "max_cpu_usage_ms": 0,
             "delay_sec": 0,
             "context_free_actions": [],
@@ -178,7 +178,7 @@ class TestMsgEosSignTx(TrezorTest):
             "expiration": "2018-07-14T10:43:28",
             "ref_block_num": 6439,
             "ref_block_prefix": 2995713264,
-            "net_usage_words": 0,
+            "max_net_usage_words": 0,
             "max_cpu_usage_ms": 0,
             "delay_sec": 0,
             "context_free_actions": [],
@@ -216,7 +216,7 @@ class TestMsgEosSignTx(TrezorTest):
             "expiration": "2018-07-14T10:43:28",
             "ref_block_num": 6439,
             "ref_block_prefix": 2995713264,
-            "net_usage_words": 0,
+            "max_net_usage_words": 0,
             "max_cpu_usage_ms": 0,
             "delay_sec": 0,
             "context_free_actions": [],
@@ -260,7 +260,7 @@ class TestMsgEosSignTx(TrezorTest):
             "expiration": "2018-07-14T10:43:28",
             "ref_block_num": 6439,
             "ref_block_prefix": 2995713264,
-            "net_usage_words": 0,
+            "max_net_usage_words": 0,
             "max_cpu_usage_ms": 0,
             "delay_sec": 0,
             "context_free_actions": [],
@@ -303,7 +303,7 @@ class TestMsgEosSignTx(TrezorTest):
             "expiration": "2018-07-14T10:43:28",
             "ref_block_num": 6439,
             "ref_block_prefix": 2995713264,
-            "net_usage_words": 0,
+            "max_net_usage_words": 0,
             "max_cpu_usage_ms": 0,
             "delay_sec": 0,
             "context_free_actions": [],
@@ -341,7 +341,7 @@ class TestMsgEosSignTx(TrezorTest):
             "expiration": "2018-07-14T10:43:28",
             "ref_block_num": 6439,
             "ref_block_prefix": 2995713264,
-            "net_usage_words": 0,
+            "max_net_usage_words": 0,
             "max_cpu_usage_ms": 0,
             "delay_sec": 0,
             "context_free_actions": [],
@@ -384,7 +384,7 @@ class TestMsgEosSignTx(TrezorTest):
             "expiration": "2018-07-14T10:43:28",
             "ref_block_num": 6439,
             "ref_block_prefix": 2995713264,
-            "net_usage_words": 0,
+            "max_net_usage_words": 0,
             "max_cpu_usage_ms": 0,
             "delay_sec": 0,
             "context_free_actions": [],
@@ -426,7 +426,7 @@ class TestMsgEosSignTx(TrezorTest):
             "expiration": "2018-07-14T10:43:28",
             "ref_block_num": 6439,
             "ref_block_prefix": 2995713264,
-            "net_usage_words": 0,
+            "max_net_usage_words": 0,
             "max_cpu_usage_ms": 0,
             "delay_sec": 0,
             "context_free_actions": [],
@@ -491,7 +491,7 @@ class TestMsgEosSignTx(TrezorTest):
             "expiration": "2018-07-14T10:43:28",
             "ref_block_num": 6439,
             "ref_block_prefix": 2995713264,
-            "net_usage_words": 0,
+            "max_net_usage_words": 0,
             "max_cpu_usage_ms": 0,
             "delay_sec": 0,
             "context_free_actions": [],
@@ -529,7 +529,7 @@ class TestMsgEosSignTx(TrezorTest):
             "expiration": "2018-07-14T10:43:28",
             "ref_block_num": 6439,
             "ref_block_prefix": 2995713264,
-            "net_usage_words": 0,
+            "max_net_usage_words": 0,
             "max_cpu_usage_ms": 0,
             "delay_sec": 0,
             "context_free_actions": [],
@@ -601,7 +601,7 @@ class TestMsgEosSignTx(TrezorTest):
             "expiration": "2018-07-14T10:43:28",
             "ref_block_num": 6439,
             "ref_block_prefix": 2995713264,
-            "net_usage_words": 0,
+            "max_net_usage_words": 0,
             "max_cpu_usage_ms": 0,
             "delay_sec": 0,
             "context_free_actions": [],
@@ -639,7 +639,7 @@ class TestMsgEosSignTx(TrezorTest):
             "expiration": "2018-07-14T10:43:28",
             "ref_block_num": 6439,
             "ref_block_prefix": 2995713264,
-            "net_usage_words": 0,
+            "max_net_usage_words": 0,
             "max_cpu_usage_ms": 0,
             "delay_sec": 0,
             "context_free_actions": [],
@@ -677,7 +677,7 @@ class TestMsgEosSignTx(TrezorTest):
             "expiration": "2018-07-14T10:43:28",
             "ref_block_num": 6439,
             "ref_block_prefix": 2995713264,
-            "net_usage_words": 0,
+            "max_net_usage_words": 0,
             "max_cpu_usage_ms": 0,
             "delay_sec": 0,
             "context_free_actions": [],
@@ -797,7 +797,7 @@ class TestMsgEosSignTx(TrezorTest):
             "expiration": "2018-06-19T13:29:53",
             "ref_block_num": 30587,
             "ref_block_prefix": 338239089,
-            "net_usage_words": 0,
+            "max_net_usage_words": 0,
             "max_cpu_usage_ms": 0,
             "delay_sec": 0,
             "context_free_actions": [],