diff --git a/slsDetectorSoftware/src/CtbConfig.cpp b/slsDetectorSoftware/src/CtbConfig.cpp
index a2452de6f..b0c8450fa 100644
--- a/slsDetectorSoftware/src/CtbConfig.cpp
+++ b/slsDetectorSoftware/src/CtbConfig.cpp
@@ -80,6 +80,13 @@ CtbConfig::getNames(size_t expected_size,
 
 void CtbConfig::setDacName(size_t index, const std::string &name) {
     check_index(index, num_dacs, "DAC");
+    std::vector<std::string> powers = {"v_a", "v_b", "v_c", "v_d", "v_io", "va", "vb", "vc", "vd", "vio"};
+    std::string lower = name;
+    std::transform(lower.begin(), lower.end(), lower.begin(),
+        [](unsigned char c){ return std::tolower(c); });
+    if (std::find(powers.begin(), powers.end(), lower) != powers.end()) {
+       throw RuntimeError("DAC name cannot be a power name (VA, VB, VC, VD, VIO, V_A, V_B, V_C, V_D, V_IO)");
+    }
     set_name(name, dacnames, index);
 }
 
diff --git a/slsDetectorSoftware/tests/Caller/test-Caller-chiptestboard.cpp b/slsDetectorSoftware/tests/Caller/test-Caller-chiptestboard.cpp
index 04734111d..d7eaba1d1 100644
--- a/slsDetectorSoftware/tests/Caller/test-Caller-chiptestboard.cpp
+++ b/slsDetectorSoftware/tests/Caller/test-Caller-chiptestboard.cpp
@@ -46,6 +46,11 @@ TEST_CASE("dacname", "[.detectorintegration]") {
             REQUIRE(oss.str() ==
                     std::string("dacname ") + str_dac_index + " bname\n");
         }
+        REQUIRE_THROWS(caller.call("dacname", {str_dac_index, "v_a"}, -1, PUT));
+        REQUIRE_THROWS(caller.call("dacname", {str_dac_index, "v_b"}, -1, PUT));
+        REQUIRE_THROWS(caller.call("dacname", {str_dac_index, "v_c"}, -1, PUT));
+        REQUIRE_THROWS(caller.call("dacname", {str_dac_index, "v_d"}, -1, PUT));
+        REQUIRE_THROWS(caller.call("dacname", {str_dac_index, "v_io"}, -1, PUT));
         det.setDacName(ind, prev);
 
     } else {