diff --git a/src/script.cpp b/src/script.cpp
index 2b66bc73d..b2d8a67f9 100644
--- a/src/script.cpp
+++ b/src/script.cpp
@@ -1863,6 +1863,24 @@ bool CScript::IsPayToScriptHash() const
             this->at(22) == OP_EQUAL);
 }
 
+bool CScript::IsPushOnly() const
+{
+    const_iterator pc = begin();
+    while (pc < end())
+    {
+        opcodetype opcode;
+        if (!GetOp(pc, opcode))
+            return false;
+        // Note that IsPushOnly() *does* consider OP_RESERVED to be a
+        // push-type opcode, however execution of OP_RESERVED fails, so
+        // it's not relevant to P2SH as the scriptSig would fail prior to
+        // the P2SH special validation code being executed.
+        if (opcode > OP_16)
+            return false;
+    }
+    return true;
+}
+
 class CScriptVisitor : public boost::static_visitor<bool>
 {
 private:
diff --git a/src/script.h b/src/script.h
index bd120cc07..a0a6cd1c4 100644
--- a/src/script.h
+++ b/src/script.h
@@ -542,23 +542,7 @@ public:
     bool IsPayToScriptHash() const;
 
     // Called by IsStandardTx
-    bool IsPushOnly() const
-    {
-        const_iterator pc = begin();
-        while (pc < end())
-        {
-            opcodetype opcode;
-            if (!GetOp(pc, opcode))
-                return false;
-            // Note that IsPushOnly() *does* consider OP_RESERVED to be a
-            // push-type opcode, however execution of OP_RESERVED fails, so
-            // it's not relevant to P2SH as the scriptSig would fail prior to
-            // the P2SH special validation code being executed.
-            if (opcode > OP_16)
-                return false;
-        }
-        return true;
-    }
+    bool IsPushOnly() const;
 
     // Returns whether the script is guaranteed to fail at execution,
     // regardless of the initial stack. This allows outputs to be pruned