diff --git a/ext/soap/soap.c b/ext/soap/soap.c
index 2b6a32d3265f..0bbf13a6c282 100644
--- a/ext/soap/soap.c
+++ b/ext/soap/soap.c
@@ -3460,13 +3460,15 @@ static sdlFunctionPtr deserialize_function_call(sdlPtr sdl, xmlDocPtr request, c
 		}
 	}
 
-	if (function && function->binding && function->binding->bindingType == BINDING_SOAP) {
-		sdlSoapBindingFunctionPtr fnb = (sdlSoapBindingFunctionPtr)function->bindingAttributes;
-		if (fnb->style == SOAP_RPC) {
+	if (func != NULL) {
+		if (function && function->binding && function->binding->bindingType == BINDING_SOAP) {
+			sdlSoapBindingFunctionPtr fnb = (sdlSoapBindingFunctionPtr)function->bindingAttributes;
+			if (fnb->style == SOAP_RPC) {
+				func = func->children;
+			}
+		} else {
 			func = func->children;
 		}
-	} else {
-		func = func->children;
 	}
 	deserialize_parameters(func, function, num_params, parameters);
 
diff --git a/ext/soap/tests/empty_body_soapaction.phpt b/ext/soap/tests/empty_body_soapaction.phpt
new file mode 100644
index 000000000000..93102c739c7e
--- /dev/null
+++ b/ext/soap/tests/empty_body_soapaction.phpt
@@ -0,0 +1,33 @@
+--TEST--
+SoapServer: empty Body with SOAPAction must not crash (RPC)
+--EXTENSIONS--
+soap
+--INI--
+soap.wsdl_cache_enabled=0
+--SKIPIF--
+<?php
+if (php_sapi_name() == 'cli') echo 'skip non-CLI SAPI required for --POST-- / php://input';
+?>
+--POST--
+<?xml version="1.0" encoding="UTF-8"?>
+<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/">
+  <SOAP-ENV:Body/>
+</SOAP-ENV:Envelope>
+--FILE--
+<?php
+class T {
+	function test() {
+		return 'ok';
+	}
+}
+
+$server = new SoapServer(__DIR__ . '/server025.wsdl', [
+	'cache_wsdl' => WSDL_CACHE_NONE,
+]);
+$server->setClass(T::class);
+$_SERVER['HTTP_SOAPACTION'] = '"Test"';
+$server->handle();
+?>
+--EXPECT--
+<?xml version="1.0" encoding="UTF-8"?>
+<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ns1="http://testuri.org"><SOAP-ENV:Body><ns1:testResponse><result>ok</result></ns1:testResponse></SOAP-ENV:Body></SOAP-ENV:Envelope>