diff --git a/SConscript b/SConscript
index ef50eb7ecefea1994987d1723a5ae4950dd4b8fb..310f61949650863e3571ef723df9d6b0c5dc9cf3 100644
--- a/SConscript
+++ b/SConscript
@@ -22,9 +22,6 @@ if argenv['SMPSA_HOME'] is None:
     exit(1)
 
 
-if argenv['SECURITY_TRANSFORMS_HOME'] is None:
-    print 'Cannot build libstars.a without SECURITY_TRANSFORMS_HOME set.  Did you forget the env. var.?  Or try setting build_irdb=0. '
-    exit(1)
 
 if int(argenv['debug']) == 1:
 	print "Setting debug mode"
@@ -50,7 +47,11 @@ if int(argenv['build_ida']) == 1:
 
 	print "Build IDA Plugin"
 	lib=SConscript('SConscript.ida', variant_dir='build_ida')
+
 if int(argenv['build_irdb']) == 1 or int(argenv['build_irdb_driver']) == 1:
+	if argenv['SECURITY_TRANSFORMS_HOME'] is None:
+	    print 'Cannot build libstars.a without SECURITY_TRANSFORMS_HOME set.  Did you forget the env. var.?  Or try setting build_irdb=0. '
+	    exit(1)
 	print "Build IDA/IRDB library"
 	lib=SConscript('SConscript.irdb_lib', variant_dir='build_irdb_lib')
 
diff --git a/SConscript.ida b/SConscript.ida
index 79e26326b609ccde0bf3743b3873a0e19594b04f..e226ec79c838e2068a415ec6b508c3a50dd373c8 100644
--- a/SConscript.ida
+++ b/SConscript.ida
@@ -2,7 +2,7 @@ import os
 
 Import('argenv', 'STARS_CCFLAGS')
 
-myenv=argenv.Clone()
+idaenv=argenv.Clone()
 
 dirs='''
 	src/base
@@ -42,20 +42,20 @@ for dir in dirs:
 	files=files+Glob(os.path.join(dir,"*.cpp"))
 
 # set suffix properly
-if int(myenv['do_64bit_analysis']) == 1:
+if int(idaenv['do_64bit_analysis']) == 1:
 	SHLIBSUF=".plx64"
 else:
 	SHLIBSUF=".plx"
 
-idaenv=myenv.Clone(CCFLAGS=IDA_CCFLAGS, SHLINKFLAGS=IDA_LDFLAGS, SHLIBSUFFIX=SHLIBSUF, SHLIBPREFIX="", CPPPATH=Split(cpppath));
+idaenv=idaenv.Clone(CCFLAGS=IDA_CCFLAGS, SHLINKFLAGS=IDA_LDFLAGS, SHLIBSUFFIX=SHLIBSUF, SHLIBPREFIX="", CPPPATH=Split(cpppath));
 lib=idaenv.SharedLibrary('SMPStaticAnalyzer', files, LIBPATH="$IDAROOT", libs="ida")
 
 
-install=myenv.Install("$IDAROOT/idc/", "$SMPSA_HOME/scripts/SMP.idc")
+install=idaenv.Install("$IDAROOT/idc/", "$SMPSA_HOME/scripts/SMP.idc")
 Default(install)
 
-install=myenv.Install("$IDAROOT/plugins/", lib)
-myenv.Alias("install", "$IDAROOT/plugins/")
+install=idaenv.Install("$IDAROOT/plugins/", lib)
+Default(install)
 Return('install')