diff --git a/client/fpga_compress.c b/client/fpga_compress.c
index 2212265ad..53ab4b0b2 100644
--- a/client/fpga_compress.c
+++ b/client/fpga_compress.c
@@ -294,12 +294,16 @@ int main(int argc, char **argv)
 		} else {
 			num_input_files = argc-2;
 		}
+		int adder = (hardnested_mode) ? 2 : 1;
+		
 		infiles = calloc(num_input_files, sizeof(FILE*));
 		for (uint16_t i = 0; i < num_input_files; i++) { 
-			infiles[i] = fopen(argv[i+hardnested_mode?2:1], "rb");
+			infiles[i] = fopen(argv[i + adder ] , "rb");
 			if (infiles[i] == NULL) {
-				fprintf(stderr, "Error. Cannot open input file %s", argv[i+hardnested_mode?2:1]);
+				fprintf(stderr, "Error. Cannot open input file %s", argv[i + adder] );
 				return(EXIT_FAILURE);
+			} else {
+                printf("Opening %s %d \n", argv[i + adder], i+adder );
 			}
 		}
 		outfile = fopen(argv[argc-1], "wb");