diff --git a/src/qml/jsruntime/jsruntime.pri b/src/qml/jsruntime/jsruntime.pri
index c27aaa9..05c86e8 100644
--- a/src/qml/jsruntime/jsruntime.pri
+++ b/src/qml/jsruntime/jsruntime.pri
@@ -105,6 +105,11 @@ SOURCES += \
     $$PWD/qv4string.cpp \
     $$PWD/qv4value.cpp
 
+linux-g++*:isEqual(QT_ARCH,i386):!no_sse2 {
+    QMAKE_CFLAGS += -msse2 -mfpmath=sse
+    QMAKE_CXXFLAGS += -msse2 -mfpmath=sse
+}
+
 valgrind {
     DEFINES += V4_USE_VALGRIND
 }
diff --git a/src/qml/jsruntime/qv4global_p.h b/src/qml/jsruntime/qv4global_p.h
index 1208f0f..31b9c38 100644
--- a/src/qml/jsruntime/qv4global_p.h
+++ b/src/qml/jsruntime/qv4global_p.h
@@ -69,7 +69,7 @@ inline double trunc(double d) { return d > 0 ? floor(d) : ceil(d); }
 //
 // NOTE: This should match the logic in qv4targetplatform_p.h!
 
-#if defined(Q_PROCESSOR_X86) && !defined(__ILP32__) \
+#if defined(Q_PROCESSOR_X86) && !defined(__ILP32__) && defined(__SSE2__) \
     && (defined(Q_OS_WIN) || defined(Q_OS_LINUX) || defined(Q_OS_QNX) || defined(Q_OS_FREEBSD))
 #define V4_ENABLE_JIT
 #elif defined(Q_PROCESSOR_X86_64) && !defined(__ILP32__) \
diff --git a/src/qml/qml/v8/qv8engine.cpp b/src/qml/qml/v8/qv8engine.cpp
index 39b816f..7aedf9e 100644
--- a/src/qml/qml/v8/qv8engine.cpp
+++ b/src/qml/qml/v8/qv8engine.cpp
@@ -121,7 +121,7 @@ QV8Engine::QV8Engine(QJSEngine* qq)
     , m_xmlHttpRequestData(0)
     , m_listModelData(0)
 {
-#ifdef Q_PROCESSOR_X86_32
+#if defined(Q_PROCESSOR_X86_32) && defined(__SSE2__)
     if (!qCpuHasFeature(SSE2)) {
         qFatal("This program requires an X86 processor that supports SSE2 extension, at least a Pentium 4 or newer");
     }