diff --git a/slsDetectorSoftware/multiSlsDetector/multiSlsDetector.cpp b/slsDetectorSoftware/multiSlsDetector/multiSlsDetector.cpp
index f0a51b33f..16bea3d0a 100644
--- a/slsDetectorSoftware/multiSlsDetector/multiSlsDetector.cpp
+++ b/slsDetectorSoftware/multiSlsDetector/multiSlsDetector.cpp
@@ -5386,7 +5386,7 @@ int multiSlsDetector::setCTBPattern(std::string fname) {
 	uint64_t word;
 	int addr = 0;
 	FILE* fd = fopen(fname.c_str(), "r");
-	if (fd > 0) {
+	if (fd) {
 		while (fread(&word, sizeof(word), 1, fd)) {
 			for (unsigned int idet = 0; idet < detectors.size(); ++idet)
 				detectors[idet]->setCTBWord(addr, word);
diff --git a/slsDetectorSoftware/slsDetector/slsDetector.cpp b/slsDetectorSoftware/slsDetector/slsDetector.cpp
index d01827955..ec3069375 100644
--- a/slsDetectorSoftware/slsDetector/slsDetector.cpp
+++ b/slsDetectorSoftware/slsDetector/slsDetector.cpp
@@ -9563,7 +9563,7 @@ int slsDetector::setCTBPattern(string fname) {
 	int addr=0;
 
 	FILE *fd=fopen(fname.c_str(),"r");
-	if (fd>0) {
+	if (fd) {
 		while (fread(&word, sizeof(word), 1,fd)) {
 			setCTBWord(addr,word);
 			// cout << hex << addr << " " << word << dec << endl;
diff --git a/slsDetectorSoftware/slsDetectorAnalysis/postProcessingFuncs.cpp b/slsDetectorSoftware/slsDetectorAnalysis/postProcessingFuncs.cpp
index f92d132ad..a6845c8d6 100644
--- a/slsDetectorSoftware/slsDetectorAnalysis/postProcessingFuncs.cpp
+++ b/slsDetectorSoftware/slsDetectorAnalysis/postProcessingFuncs.cpp
@@ -103,7 +103,7 @@ int postProcessingFuncs::addFrame(double *data, double *pos, double *I0, double
 
 
 
-  if (I0>0) {
+  if (I0 != NULL) {
     i0=*I0; 
     totalI0+=i0;
   } else