diff --git a/src/util-strings.h b/src/util-strings.h
index 063ebaf3..47178ac0 100644
--- a/src/util-strings.h
+++ b/src/util-strings.h
@@ -283,6 +283,7 @@ safe_atod(const char *str, double *val)
 		case '-':
 		case '.':
 		case 'e':
+		case 'E':
 			break;
 		default:
 			return false;
diff --git a/test/test-utils.c b/test/test-utils.c
index c9b0e9ef..5293b915 100644
--- a/test/test-utils.c
+++ b/test/test-utils.c
@@ -1613,6 +1613,7 @@ START_TEST(safe_atod_test)
 		{ "-2147483648", true, -2147483648 },
 		{ "4294967295", true, 4294967295 },
 		{ "-1.3e-1", true, -0.130},
+		{ "1.5E2", true, 150.0},
 		{ "0x0", false, 0 },
 		{ "0x10", false, 0 },
 		{ "0xaf", false, 0 },