diff --git a/src/core_read.cpp b/src/core_read.cpp
--- a/src/core_read.cpp
+++ b/src/core_read.cpp
@@ -27,8 +27,8 @@
 
     if (mapOpNames.empty()) {
         for (int op = 0; op < FIRST_UNDEFINED_OP_VALUE; op++) {
-            // ignore all "PUSHDATA" ops, but dont ignore OP_RESERVED
-            if (op < OP_NOP && op != OP_RESERVED) {
+            // ignore all "PUSHDATA" ops before PUSHDATA1
+            if (op < OP_PUSHDATA1) {
                 continue;
             }
 
@@ -50,6 +50,8 @@
                             boost::algorithm::token_compress_on);
 
     size_t push_size = 0, next_push_size = 0;
+    // Deal with PUSHDATA1-4 operation with some more hacks.
+    bool havePushData = false;
 
     for (const auto &w : words) {
         if (w.empty()) {
@@ -94,6 +96,11 @@
                 next_push_size = raw[0];
             }
 
+            if (havePushData) {
+                next_push_size = CScriptNum(raw, false).getint();
+                havePushData = false;
+            }
+
             result.insert(result.end(), raw.begin(), raw.end());
             continue;
         }
@@ -115,12 +122,15 @@
             switch (op) {
                 case OP_PUSHDATA1:
                     next_push_size = 1;
+                    havePushData = true;
                     break;
                 case OP_PUSHDATA2:
                     next_push_size = 2;
+                    havePushData = true;
                     break;
                 case OP_PUSHDATA4:
                     next_push_size = 4;
+                    havePushData = true;
                     break;
                 default:
                     break;
diff --git a/src/test/core_io_tests.cpp b/src/test/core_io_tests.cpp
--- a/src/test/core_io_tests.cpp
+++ b/src/test/core_io_tests.cpp
@@ -31,6 +31,17 @@
     BOOST_CHECK_NO_THROW(ParseScript("0x02 0x0101"));
     BOOST_CHECK_THROW(ParseScript("0x02 0x01"), std::runtime_error);
     BOOST_CHECK_THROW(ParseScript("0x02 0x010101"), std::runtime_error);
+
+    // Note sizes are LE encoded.
+    BOOST_CHECK_NO_THROW(ParseScript("PUSHDATA4 0x02000000 0x0101"));
+    BOOST_CHECK_THROW(ParseScript("PUSHDATA4 0x03000000 0x0101"),
+                      std::runtime_error);
+    BOOST_CHECK_NO_THROW(ParseScript("PUSHDATA2 0x0200 0x0101"));
+    BOOST_CHECK_THROW(ParseScript("PUSHDATA2 0x0300 0x0101"),
+                      std::runtime_error);
+    BOOST_CHECK_NO_THROW(ParseScript("PUSHDATA1 0x02 0x0101"));
+    BOOST_CHECK_THROW(ParseScript("PUSHDATA1 0x02 0x010101"),
+                      std::runtime_error);
 }
 
 BOOST_AUTO_TEST_SUITE_END()