diff --git a/reactos/tools/spec2def/spec2def.c b/reactos/tools/spec2def/spec2def.c
index 6cb0ad1a8f5..f0f2db37542 100644
--- a/reactos/tools/spec2def/spec2def.c
+++ b/reactos/tools/spec2def/spec2def.c
@@ -720,7 +720,7 @@ int main(int argc, char *argv[])
     else if (strcasecmp(pszArchString, "arm") == 0) giArch = ARCH_ARM;
     else if (strcasecmp(pszArchString, "ppc") == 0) giArch = ARCH_PPC;
 
-    if ((giArch == ARCH_AMD64) || (giArch = ARCH_IA64))
+    if ((giArch == ARCH_AMD64) || (giArch == ARCH_IA64))
     {
         pszArchString2 = "win64";
     }