diff --git a/src/qml/jsruntime/jsruntime.pri b/src/qml/jsruntime/jsruntime.pri

index 72010d3..2bd5acb 100644

--- a/src/qml/jsruntime/jsruntime.pri

+++ b/src/qml/jsruntime/jsruntime.pri

@@ -107,7 +107,7 @@ SOURCES += \

 # Use SSE2 floating point math on 32 bit instead of the default

 # 387 to make test results pass on 32 and on 64 bit builds.

-linux-g++*:isEqual(QT_ARCH,i386) {

+linux-g++*:isEqual(QT_ARCH,i386):!no_sse2 {

     QMAKE_CFLAGS += -march=pentium4 -msse2 -mfpmath=sse

     QMAKE_CXXFLAGS += -march=pentium4 -msse2 -mfpmath=sse

 }

diff --git a/src/qml/jsruntime/qv4global_p.h b/src/qml/jsruntime/qv4global_p.h

index b5dc674..97e9ae6 100644

--- a/src/qml/jsruntime/qv4global_p.h

+++ b/src/qml/jsruntime/qv4global_p.h

@@ -75,7 +75,7 @@ inline double trunc(double d) { return d > 0 ? floor(d) : ceil(d); }

 // White list architectures

-#if defined(Q_PROCESSOR_X86)

+#if defined(Q_PROCESSOR_X86) && defined(__SSE2__)

 #define V4_ENABLE_JIT

 #elif defined(Q_PROCESSOR_X86_64)

 #define V4_ENABLE_JIT